Finding the Fourth Proportional to 99,339.14, 137,087.27 and 54,017.15

Step by Step Solution

1. Step 1: Write the proportion equation
   99,339.14 : 137,087.27 = 54,017.15 : x
2. Step 2: Convert to fraction form
   99,339.14/137,087.27 = 54,017.15/x
3. Step 3: Cross multiply
   99,339.14x = 137,087.27 × 54,017.15
4. Step 4: Simplify right side
   99,339.14x = 7,405,063,356.59
5. Step 5: Solve for x
   x = 7,405,063,356.59/99,339.14
6. Step 6: Final answer
   x = 74,543.26