Finding the Fourth Proportional to 99,337.71, 137,084.09 and 54,015.31

Step by Step Solution

1. Step 1: Write the proportion equation
   99,337.71 : 137,084.09 = 54,015.31 : x
2. Step 2: Convert to fraction form
   99,337.71/137,084.09 = 54,015.31/x
3. Step 3: Cross multiply
   99,337.71x = 137,084.09 × 54,015.31
4. Step 4: Simplify right side
   99,337.71x = 7,404,639,617.42
5. Step 5: Solve for x
   x = 7,404,639,617.42/99,337.71
6. Step 6: Final answer
   x = 74,540.07