Finding the Fourth Proportional to 88,187.90, 132,280.56 and 21,628.54

Step by Step Solution

1. Step 1: Write the proportion equation
   88,187.90 : 132,280.56 = 21,628.54 : x
2. Step 2: Convert to fraction form
   88,187.90/132,280.56 = 21,628.54/x
3. Step 3: Cross multiply
   88,187.90x = 132,280.56 × 21,628.54
4. Step 4: Simplify right side
   88,187.90x = 2,861,034,721.78
5. Step 5: Solve for x
   x = 2,861,034,721.78/88,187.90
6. Step 6: Final answer
   x = 32,442.49