Finding the Fourth Proportional to 124,128.09, 186,046.33 and 57,427.32

Step by Step Solution

1. Step 1: Write the proportion equation
   124,128.09 : 186,046.33 = 57,427.32 : x
2. Step 2: Convert to fraction form
   124,128.09/186,046.33 = 57,427.32/x
3. Step 3: Cross multiply
   124,128.09x = 186,046.33 × 57,427.32
4. Step 4: Simplify right side
   124,128.09x = 10,684,142,127.74
5. Step 5: Solve for x
   x = 10,684,142,127.74/124,128.09
6. Step 6: Final answer
   x = 86,073.52