Finding the Fourth Proportional to 31,785.27, 43,863.98 and 17,639.43

Step by Step Solution

1. Step 1: Write the proportion equation
   31,785.27 : 43,863.98 = 17,639.43 : x
2. Step 2: Convert to fraction form
   31,785.27/43,863.98 = 17,639.43/x
3. Step 3: Cross multiply
   31,785.27x = 43,863.98 × 17,639.43
4. Step 4: Simplify right side
   31,785.27x = 773,735,516.53
5. Step 5: Solve for x
   x = 773,735,516.53/31,785.27
6. Step 6: Final answer
   x = 24,342.58