Finding the Fourth Proportional to 131,530.10, 197,376.15 and 56,686.10

Step by Step Solution

1. Step 1: Write the proportion equation
   131,530.10 : 197,376.15 = 56,686.10 : x
2. Step 2: Convert to fraction form
   131,530.10/197,376.15 = 56,686.10/x
3. Step 3: Cross multiply
   131,530.10x = 197,376.15 × 56,686.10
4. Step 4: Simplify right side
   131,530.10x = 11,188,484,176.52
5. Step 5: Solve for x
   x = 11,188,484,176.52/131,530.10
6. Step 6: Final answer
   x = 85,064.06