Finding the Fourth Proportional to 123,757.15, 185,605.96 and 57,133.31

Step by Step Solution

1. Step 1: Write the proportion equation
   123,757.15 : 185,605.96 = 57,133.31 : x
2. Step 2: Convert to fraction form
   123,757.15/185,605.96 = 57,133.31/x
3. Step 3: Cross multiply
   123,757.15x = 185,605.96 × 57,133.31
4. Step 4: Simplify right side
   123,757.15x = 10,604,282,850.53
5. Step 5: Solve for x
   x = 10,604,282,850.53/123,757.15
6. Step 6: Final answer
   x = 85,686.22