Finding the Fourth Proportional to 31,061.27, 42,865.25 and 17,631.26

Step by Step Solution

1. Step 1: Write the proportion equation
   31,061.27 : 42,865.25 = 17,631.26 : x
2. Step 2: Convert to fraction form
   31,061.27/42,865.25 = 17,631.26/x
3. Step 3: Cross multiply
   31,061.27x = 42,865.25 × 17,631.26
4. Step 4: Simplify right side
   31,061.27x = 755,768,367.72
5. Step 5: Solve for x
   x = 755,768,367.72/31,061.27
6. Step 6: Final answer
   x = 24,331.53