Finding the Fourth Proportional to 88,118.72, 121,600.56 and 47,831.64

Step by Step Solution

1. Step 1: Write the proportion equation
   88,118.72 : 121,600.56 = 47,831.64 : x
2. Step 2: Convert to fraction form
   88,118.72/121,600.56 = 47,831.64/x
3. Step 3: Cross multiply
   88,118.72x = 121,600.56 × 47,831.64
4. Step 4: Simplify right side
   88,118.72x = 5,816,354,209.72
5. Step 5: Solve for x
   x = 5,816,354,209.72/88,118.72
6. Step 6: Final answer
   x = 66,005.89