Finding the Fourth Proportional to 88,378.59, 132,568.15 and 21,818.72

Step by Step Solution

1. Step 1: Write the proportion equation
   88,378.59 : 132,568.15 = 21,818.72 : x
2. Step 2: Convert to fraction form
   88,378.59/132,568.15 = 21,818.72/x
3. Step 3: Cross multiply
   88,378.59x = 132,568.15 × 21,818.72
4. Step 4: Simplify right side
   88,378.59x = 2,892,467,400.31
5. Step 5: Solve for x
   x = 2,892,467,400.31/88,378.59
6. Step 6: Final answer
   x = 32,728.15