Finding the Fourth Proportional to 99,957.50, 149,819.61 and 55,563.02

Step by Step Solution

1. Step 1: Write the proportion equation
   99,957.50 : 149,819.61 = 55,563.02 : x
2. Step 2: Convert to fraction form
   99,957.50/149,819.61 = 55,563.02/x
3. Step 3: Cross multiply
   99,957.50x = 149,819.61 × 55,563.02
4. Step 4: Simplify right side
   99,957.50x = 8,324,429,986.82
5. Step 5: Solve for x
   x = 8,324,429,986.82/99,957.50
6. Step 6: Final answer
   x = 83,279.69