Finding the Fourth Proportional to 88,717.41, 122,400.72 and 58,517.78

Step by Step Solution

1. Step 1: Write the proportion equation
   88,717.41 : 122,400.72 = 58,517.78 : x
2. Step 2: Convert to fraction form
   88,717.41/122,400.72 = 58,517.78/x
3. Step 3: Cross multiply
   88,717.41x = 122,400.72 × 58,517.78
4. Step 4: Simplify right side
   88,717.41x = 7,162,617,792.80
5. Step 5: Solve for x
   x = 7,162,617,792.80/88,717.41
6. Step 6: Final answer
   x = 80,735.20