Finding the Fourth Proportional to 123,910.62, 185,959.42 and 57,397.42

Step by Step Solution

1. Step 1: Write the proportion equation
   123,910.62 : 185,959.42 = 57,397.42 : x
2. Step 2: Convert to fraction form
   123,910.62/185,959.42 = 57,397.42/x
3. Step 3: Cross multiply
   123,910.62x = 185,959.42 × 57,397.42
4. Step 4: Simplify right side
   123,910.62x = 10,673,590,932.70
5. Step 5: Solve for x
   x = 10,673,590,932.70/123,910.62
6. Step 6: Final answer
   x = 86,139.44