Finding the Fourth Proportional to 88,567.20, 132,917.52 and 60,420.72

Step by Step Solution

1. Step 1: Write the proportion equation
   88,567.20 : 132,917.52 = 60,420.72 : x
2. Step 2: Convert to fraction form
   88,567.20/132,917.52 = 60,420.72/x
3. Step 3: Cross multiply
   88,567.20x = 132,917.52 × 60,420.72
4. Step 4: Simplify right side
   88,567.20x = 8,030,972,259.01
5. Step 5: Solve for x
   x = 8,030,972,259.01/88,567.20
6. Step 6: Final answer
   x = 90,676.60