Finding the Fourth Proportional to 31,019.04, 42,805.84 and 16,871.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,019.04 : 42,805.84 = 16,871.56 : x
2. Step 2: Convert to fraction form
   31,019.04/42,805.84 = 16,871.56/x
3. Step 3: Cross multiply
   31,019.04x = 42,805.84 × 16,871.56
4. Step 4: Simplify right side
   31,019.04x = 722,201,297.91
5. Step 5: Solve for x
   x = 722,201,297.91/31,019.04
6. Step 6: Final answer
   x = 23,282.52