Finding the Fourth Proportional to 131,411.90, 197,149.17 and 42,665.60

Step by Step Solution

1. Step 1: Write the proportion equation
   131,411.90 : 197,149.17 = 42,665.60 : x
2. Step 2: Convert to fraction form
   131,411.90/197,149.17 = 42,665.60/x
3. Step 3: Cross multiply
   131,411.90x = 197,149.17 × 42,665.60
4. Step 4: Simplify right side
   131,411.90x = 8,411,487,627.55
5. Step 5: Solve for x
   x = 8,411,487,627.55/131,411.90
6. Step 6: Final answer
   x = 64,008.57