Finding the Fourth Proportional to 31,013.18, 42,791.39 and 17,581.35

Step by Step Solution

1. Step 1: Write the proportion equation
   31,013.18 : 42,791.39 = 17,581.35 : x
2. Step 2: Convert to fraction form
   31,013.18/42,791.39 = 17,581.35/x
3. Step 3: Cross multiply
   31,013.18x = 42,791.39 × 17,581.35
4. Step 4: Simplify right side
   31,013.18x = 752,330,543.07
5. Step 5: Solve for x
   x = 752,330,543.07/31,013.18
6. Step 6: Final answer
   x = 24,258.41