Finding the Fourth Proportional to 99,385.68, 137,150.92 and 54,062.71

Step by Step Solution

1. Step 1: Write the proportion equation
   99,385.68 : 137,150.92 = 54,062.71 : x
2. Step 2: Convert to fraction form
   99,385.68/137,150.92 = 54,062.71/x
3. Step 3: Cross multiply
   99,385.68x = 137,150.92 × 54,062.71
4. Step 4: Simplify right side
   99,385.68x = 7,414,750,138.89
5. Step 5: Solve for x
   x = 7,414,750,138.89/99,385.68
6. Step 6: Final answer
   x = 74,605.82