Finding the Fourth Proportional to 31,021.29, 42,799.73 and 17,591.49

Step by Step Solution

1. Step 1: Write the proportion equation
   31,021.29 : 42,799.73 = 17,591.49 : x
2. Step 2: Convert to fraction form
   31,021.29/42,799.73 = 17,591.49/x
3. Step 3: Cross multiply
   31,021.29x = 42,799.73 × 17,591.49
4. Step 4: Simplify right side
   31,021.29x = 752,910,934.34
5. Step 5: Solve for x
   x = 752,910,934.34/31,021.29
6. Step 6: Final answer
   x = 24,270.78