Finding the Fourth Proportional to 31,059.24, 42,859.56 and 17,630.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,059.24 : 42,859.56 = 17,630.78 : x
2. Step 2: Convert to fraction form
   31,059.24/42,859.56 = 17,630.78/x
3. Step 3: Cross multiply
   31,059.24x = 42,859.56 × 17,630.78
4. Step 4: Simplify right side
   31,059.24x = 755,647,473.26
5. Step 5: Solve for x
   x = 755,647,473.26/31,059.24
6. Step 6: Final answer
   x = 24,329.23