Finding the Fourth Proportional to 88,379.55, 132,569.59 and 21,819.68

Step by Step Solution

1. Step 1: Write the proportion equation
   88,379.55 : 132,569.59 = 21,819.68 : x
2. Step 2: Convert to fraction form
   88,379.55/132,569.59 = 21,819.68/x
3. Step 3: Cross multiply
   88,379.55x = 132,569.59 × 21,819.68
4. Step 4: Simplify right side
   88,379.55x = 2,892,626,031.53
5. Step 5: Solve for x
   x = 2,892,626,031.53/88,379.55
6. Step 6: Final answer
   x = 32,729.59