Finding the Fourth Proportional to 57,557.42, 86,380.46 and 46,340.20

Step by Step Solution

1. Step 1: Write the proportion equation
   57,557.42 : 86,380.46 = 46,340.20 : x
2. Step 2: Convert to fraction form
   57,557.42/86,380.46 = 46,340.20/x
3. Step 3: Cross multiply
   57,557.42x = 86,380.46 × 46,340.20
4. Step 4: Simplify right side
   57,557.42x = 4,002,887,792.49
5. Step 5: Solve for x
   x = 4,002,887,792.49/57,557.42
6. Step 6: Final answer
   x = 69,545.99