Finding the Fourth Proportional to 99,423.28, 137,158.78 and 59,114.14

Step by Step Solution

1. Step 1: Write the proportion equation
   99,423.28 : 137,158.78 = 59,114.14 : x
2. Step 2: Convert to fraction form
   99,423.28/137,158.78 = 59,114.14/x
3. Step 3: Cross multiply
   99,423.28x = 137,158.78 × 59,114.14
4. Step 4: Simplify right side
   99,423.28x = 8,108,023,323.15
5. Step 5: Solve for x
   x = 8,108,023,323.15/99,423.28
6. Step 6: Final answer
   x = 81,550.55