Finding the Fourth Proportional to 131,105.72, 196,658.69 and 56,177.25

Step by Step Solution

1. Step 1: Write the proportion equation
   131,105.72 : 196,658.69 = 56,177.25 : x
2. Step 2: Convert to fraction form
   131,105.72/196,658.69 = 56,177.25/x
3. Step 3: Cross multiply
   131,105.72x = 196,658.69 × 56,177.25
4. Step 4: Simplify right side
   131,105.72x = 11,047,744,111.92
5. Step 5: Solve for x
   x = 11,047,744,111.92/131,105.72
6. Step 6: Final answer
   x = 84,265.92