Finding the Fourth Proportional to 123,752.15, 185,598.46 and 57,128.31

Step by Step Solution

1. Step 1: Write the proportion equation
   123,752.15 : 185,598.46 = 57,128.31 : x
2. Step 2: Convert to fraction form
   123,752.15/185,598.46 = 57,128.31/x
3. Step 3: Cross multiply
   123,752.15x = 185,598.46 × 57,128.31
4. Step 4: Simplify right side
   123,752.15x = 10,602,927,112.48
5. Step 5: Solve for x
   x = 10,602,927,112.48/123,752.15
6. Step 6: Final answer
   x = 85,678.73