Finding the Fourth Proportional to 123,756.71, 185,605.28 and 57,132.86

Step by Step Solution

1. Step 1: Write the proportion equation
   123,756.71 : 185,605.28 = 57,132.86 : x
2. Step 2: Convert to fraction form
   123,756.71/185,605.28 = 57,132.86/x
3. Step 3: Cross multiply
   123,756.71x = 185,605.28 × 57,132.86
4. Step 4: Simplify right side
   123,756.71x = 10,604,161,084.35
5. Step 5: Solve for x
   x = 10,604,161,084.35/123,756.71
6. Step 6: Final answer
   x = 85,685.55