Finding the Fourth Proportional to 31,139.24, 42,973.34 and 17,711.73

Step by Step Solution

1. Step 1: Write the proportion equation
   31,139.24 : 42,973.34 = 17,711.73 : x
2. Step 2: Convert to fraction form
   31,139.24/42,973.34 = 17,711.73/x
3. Step 3: Cross multiply
   31,139.24x = 42,973.34 × 17,711.73
4. Step 4: Simplify right side
   31,139.24x = 761,132,106.72
5. Step 5: Solve for x
   x = 761,132,106.72/31,139.24
6. Step 6: Final answer
   x = 24,442.86