Finding the Fourth Proportional to 124,128.28, 186,046.61 and 57,427.52

Step by Step Solution

1. Step 1: Write the proportion equation
   124,128.28 : 186,046.61 = 57,427.52 : x
2. Step 2: Convert to fraction form
   124,128.28/186,046.61 = 57,427.52/x
3. Step 3: Cross multiply
   124,128.28x = 186,046.61 × 57,427.52
4. Step 4: Simplify right side
   124,128.28x = 10,684,195,560.28
5. Step 5: Solve for x
   x = 10,684,195,560.28/124,128.28
6. Step 6: Final answer
   x = 86,073.83