Finding the Fourth Proportional to 59,140.98, 88,712.72 and 21,192.72

Step by Step Solution

1. Step 1: Write the proportion equation
   59,140.98 : 88,712.72 = 21,192.72 : x
2. Step 2: Convert to fraction form
   59,140.98/88,712.72 = 21,192.72/x
3. Step 3: Cross multiply
   59,140.98x = 88,712.72 × 21,192.72
4. Step 4: Simplify right side
   59,140.98x = 1,880,063,729.43
5. Step 5: Solve for x
   x = 1,880,063,729.43/59,140.98
6. Step 6: Final answer
   x = 31,789.53