Finding the Fourth Proportional to 99,515.52, 137,333.79 and 54,196.02

Step by Step Solution

1. Step 1: Write the proportion equation
   99,515.52 : 137,333.79 = 54,196.02 : x
2. Step 2: Convert to fraction form
   99,515.52/137,333.79 = 54,196.02/x
3. Step 3: Cross multiply
   99,515.52x = 137,333.79 × 54,196.02
4. Step 4: Simplify right side
   99,515.52x = 7,442,944,829.52
5. Step 5: Solve for x
   x = 7,442,944,829.52/99,515.52
6. Step 6: Final answer
   x = 74,791.80