Finding the Fourth Proportional to 31,009.50, 42,791.81 and 17,581.66

Step by Step Solution

1. Step 1: Write the proportion equation
   31,009.50 : 42,791.81 = 17,581.66 : x
2. Step 2: Convert to fraction form
   31,009.50/42,791.81 = 17,581.66/x
3. Step 3: Cross multiply
   31,009.50x = 42,791.81 × 17,581.66
4. Step 4: Simplify right side
   31,009.50x = 752,351,151.65
5. Step 5: Solve for x
   x = 752,351,151.65/31,009.50
6. Step 6: Final answer
   x = 24,261.95