Finding the Fourth Proportional to 31,065.97, 42,871.56 and 17,637.61

Step by Step Solution

1. Step 1: Write the proportion equation
   31,065.97 : 42,871.56 = 17,637.61 : x
2. Step 2: Convert to fraction form
   31,065.97/42,871.56 = 17,637.61/x
3. Step 3: Cross multiply
   31,065.97x = 42,871.56 × 17,637.61
4. Step 4: Simplify right side
   31,065.97x = 756,151,855.37
5. Step 5: Solve for x
   x = 756,151,855.37/31,065.97
6. Step 6: Final answer
   x = 24,340.20