Finding the Fourth Proportional to 31,069.27, 42,874.06 and 17,638.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,069.27 : 42,874.06 = 17,638.76 : x
2. Step 2: Convert to fraction form
   31,069.27/42,874.06 = 17,638.76/x
3. Step 3: Cross multiply
   31,069.27x = 42,874.06 × 17,638.76
4. Step 4: Simplify right side
   31,069.27x = 756,245,254.57
5. Step 5: Solve for x
   x = 756,245,254.57/31,069.27
6. Step 6: Final answer
   x = 24,340.62