Finding the Fourth Proportional to 99,939.92, 137,926.92 and 57,500.24

Step by Step Solution

1. Step 1: Write the proportion equation
   99,939.92 : 137,926.92 = 57,500.24 : x
2. Step 2: Convert to fraction form
   99,939.92/137,926.92 = 57,500.24/x
3. Step 3: Cross multiply
   99,939.92x = 137,926.92 × 57,500.24
4. Step 4: Simplify right side
   99,939.92x = 7,930,831,002.46
5. Step 5: Solve for x
   x = 7,930,831,002.46/99,939.92
6. Step 6: Final answer
   x = 79,355.99