Finding the Fourth Proportional to 131,725.92, 197,568.12 and 42,978.96

Step by Step Solution

1. Step 1: Write the proportion equation
   131,725.92 : 197,568.12 = 42,978.96 : x
2. Step 2: Convert to fraction form
   131,725.92/197,568.12 = 42,978.96/x
3. Step 3: Cross multiply
   131,725.92x = 197,568.12 × 42,978.96
4. Step 4: Simplify right side
   131,725.92x = 8,491,272,326.76
5. Step 5: Solve for x
   x = 8,491,272,326.76/131,725.92
6. Step 6: Final answer
   x = 64,461.67