Finding the Fourth Proportional to 131,785.55, 181,863.78 and 71,356.25

Step by Step Solution

1. Step 1: Write the proportion equation
   131,785.55 : 181,863.78 = 71,356.25 : x
2. Step 2: Convert to fraction form
   131,785.55/181,863.78 = 71,356.25/x
3. Step 3: Cross multiply
   131,785.55x = 181,863.78 × 71,356.25
4. Step 4: Simplify right side
   131,785.55x = 12,977,116,442.31
5. Step 5: Solve for x
   x = 12,977,116,442.31/131,785.55
6. Step 6: Final answer
   x = 98,471.47