Finding the Fourth Proportional to 88,563.20, 132,911.52 and 60,416.72

Step by Step Solution

1. Step 1: Write the proportion equation
   88,563.20 : 132,911.52 = 60,416.72 : x
2. Step 2: Convert to fraction form
   88,563.20/132,911.52 = 60,416.72/x
3. Step 3: Cross multiply
   88,563.20x = 132,911.52 × 60,416.72
4. Step 4: Simplify right side
   88,563.20x = 8,030,078,088.61
5. Step 5: Solve for x
   x = 8,030,078,088.61/88,563.20
6. Step 6: Final answer
   x = 90,670.60