Finding the Fourth Proportional to 31,059.75, 42,860.25 and 17,631.27

Step by Step Solution

1. Step 1: Write the proportion equation
   31,059.75 : 42,860.25 = 17,631.27 : x
2. Step 2: Convert to fraction form
   31,059.75/42,860.25 = 17,631.27/x
3. Step 3: Cross multiply
   31,059.75x = 42,860.25 × 17,631.27
4. Step 4: Simplify right side
   31,059.75x = 755,680,640.02
5. Step 5: Solve for x
   x = 755,680,640.02/31,059.75
6. Step 6: Final answer
   x = 24,329.90