Finding the Fourth Proportional to 59,139.25, 88,656.09 and 21,690.55

Step by Step Solution

1. Step 1: Write the proportion equation
   59,139.25 : 88,656.09 = 21,690.55 : x
2. Step 2: Convert to fraction form
   59,139.25/88,656.09 = 21,690.55/x
3. Step 3: Cross multiply
   59,139.25x = 88,656.09 × 21,690.55
4. Step 4: Simplify right side
   59,139.25x = 1,922,999,382.43
5. Step 5: Solve for x
   x = 1,922,999,382.43/59,139.25
6. Step 6: Final answer
   x = 32,516.47