Finding the Fourth Proportional to 99,604.71, 137,454.50 and 54,892.71

Step by Step Solution

1. Step 1: Write the proportion equation
   99,604.71 : 137,454.50 = 54,892.71 : x
2. Step 2: Convert to fraction form
   99,604.71/137,454.50 = 54,892.71/x
3. Step 3: Cross multiply
   99,604.71x = 137,454.50 × 54,892.71
4. Step 4: Simplify right side
   99,604.71x = 7,545,249,044.96
5. Step 5: Solve for x
   x = 7,545,249,044.96/99,604.71
6. Step 6: Final answer
   x = 75,751.93