Finding the Fourth Proportional to 99,658.82, 137,530.25 and 54,336.43

Step by Step Solution

1. Step 1: Write the proportion equation
   99,658.82 : 137,530.25 = 54,336.43 : x
2. Step 2: Convert to fraction form
   99,658.82/137,530.25 = 54,336.43/x
3. Step 3: Cross multiply
   99,658.82x = 137,530.25 × 54,336.43
4. Step 4: Simplify right side
   99,658.82x = 7,472,902,874.15
5. Step 5: Solve for x
   x = 7,472,902,874.15/99,658.82
6. Step 6: Final answer
   x = 74,984.86