Finding the Fourth Proportional to 57,124.32, 78,831.12 and 31,974.24

Step by Step Solution

1. Step 1: Write the proportion equation
   57,124.32 : 78,831.12 = 31,974.24 : x
2. Step 2: Convert to fraction form
   57,124.32/78,831.12 = 31,974.24/x
3. Step 3: Cross multiply
   57,124.32x = 78,831.12 × 31,974.24
4. Step 4: Simplify right side
   57,124.32x = 2,520,565,150.35
5. Step 5: Solve for x
   x = 2,520,565,150.35/57,124.32
6. Step 6: Final answer
   x = 44,124.20