Finding the Fourth Proportional to 82,658.49, 123,889.31 and 57,562.66

Step by Step Solution

1. Step 1: Write the proportion equation
   82,658.49 : 123,889.31 = 57,562.66 : x
2. Step 2: Convert to fraction form
   82,658.49/123,889.31 = 57,562.66/x
3. Step 3: Cross multiply
   82,658.49x = 123,889.31 × 57,562.66
4. Step 4: Simplify right side
   82,658.49x = 7,131,398,229.16
5. Step 5: Solve for x
   x = 7,131,398,229.16/82,658.49
6. Step 6: Final answer
   x = 86,275.45