Finding the Fourth Proportional to 99,566.38, 137,401.54 and 54,854.38

Step by Step Solution

1. Step 1: Write the proportion equation
   99,566.38 : 137,401.54 = 54,854.38 : x
2. Step 2: Convert to fraction form
   99,566.38/137,401.54 = 54,854.38/x
3. Step 3: Cross multiply
   99,566.38x = 137,401.54 × 54,854.38
4. Step 4: Simplify right side
   99,566.38x = 7,537,076,287.75
5. Step 5: Solve for x
   x = 7,537,076,287.75/99,566.38
6. Step 6: Final answer
   x = 75,699.01