Finding the Fourth Proportional to 31,140.52, 42,973.68 and 17,711.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,140.52 : 42,973.68 = 17,711.76 : x
2. Step 2: Convert to fraction form
   31,140.52/42,973.68 = 17,711.76/x
3. Step 3: Cross multiply
   31,140.52x = 42,973.68 × 17,711.76
4. Step 4: Simplify right side
   31,140.52x = 761,139,506.48
5. Step 5: Solve for x
   x = 761,139,506.48/31,140.52
6. Step 6: Final answer
   x = 24,442.09