Finding the Fourth Proportional to 99,375.53, 137,169.05 and 61,146.77

Step by Step Solution

1. Step 1: Write the proportion equation
   99,375.53 : 137,169.05 = 61,146.77 : x
2. Step 2: Convert to fraction form
   99,375.53/137,169.05 = 61,146.77/x
3. Step 3: Cross multiply
   99,375.53x = 137,169.05 × 61,146.77
4. Step 4: Simplify right side
   99,375.53x = 8,387,443,359.89
5. Step 5: Solve for x
   x = 8,387,443,359.89/99,375.53
6. Step 6: Final answer
   x = 84,401.50