Balance Sheet Calculation

Hello Friends,

I have a doubt regarding balance sheet calculation in my Software. I am using a stored procedure for these calculations. I have some commands for calculation as given below:DECLARE @bal_gen FLOAT
DECLARE @bal_shp FLOAT
DECLARE @bal_sho FLOAT
DECLARE @tab_id INT

CREATE TABLE #Temp
(
rec_id INT IDENTITY NOT NULL
, cargo_required FLOAT
, amount_general FLOAT
, amount_ship FLOAT
, amount_shore FLOAT
, balance_general FLOAT
, balance_ship FLOAT
, balance_shore FLOAT
)

INSERT INTO #Temp (cargo_required, amount_general, amount_ship, amount_shore)
SELECT 5000, 1500, 1450, 1490
UNION ALL
SELECT 0, 3500, 3500, 3500
UNION ALL
SELECT 7000, 4500, 4550, 4560
UNION ALL
SELECT 0, 2500, 2000, 2000



SELECT @bal_gen=0,@bal_shp=0,@bal_sho=0
SELECT @tab_id=MIN(rec_id)
FROM #Temp

WHILE @tab_id IS NOT NULL
BEGIN
UPDATE #Temp
SET @bal_gen=balance_general =CASE WHEN cargo_required > 0 THEN cargo_required ELSE @bal_gen END - amount_general
, @bal_shp=balance_ship = CASE WHEN cargo_required > 0 THEN cargo_required ELSE @bal_shp END - amount_ship
, @bal_sho=balance_shore = CASE WHEN cargo_required > 0 THEN cargo_required ELSE @bal_sho END - amount_shore
WHERE rec_id = @tab_id

SELECT @tab_id=MIN(rec_id)
FROM #Temp
WHERE rec_id >@tab_id
END

Select * FROM #Temp
This is what acutally I am having in my stored procedure except the temporary table. The values which I am inserting here will get from my actual tables. What I need is to calculate balance. If you run this script you can see how the balance is calculating using the WHILE loop.

I want an efficient way to calculate the same. Is there any way to calculate it without using loop methods.
Thanks and Regards
Boney