Finding the Fourth Proportional to 131,487, 197,132.04 and 42,687.48

Step by Step Solution

1. Step 1: Write the proportion equation
   131,487 : 197,132.04 = 42,687.48 : x
2. Step 2: Convert to fraction form
   131,487/197,132.04 = 42,687.48/x
3. Step 3: Cross multiply
   131,487x = 197,132.04 × 42,687.48
4. Step 4: Simplify right side
   131,487x = 8,415,070,014.86
5. Step 5: Solve for x
   x = 8,415,070,014.86/131,487
6. Step 6: Final answer
   x = 63,999.25