Finding the Fourth Proportional to 87,061.01, 130,591.49 and 57,471.90

Step by Step Solution

1. Step 1: Write the proportion equation
   87,061.01 : 130,591.49 = 57,471.90 : x
2. Step 2: Convert to fraction form
   87,061.01/130,591.49 = 57,471.90/x
3. Step 3: Cross multiply
   87,061.01x = 130,591.49 × 57,471.90
4. Step 4: Simplify right side
   87,061.01x = 7,505,340,766.77
5. Step 5: Solve for x
   x = 7,505,340,766.77/87,061.01
6. Step 6: Final answer
   x = 86,207.84