Finding the Fourth Proportional to 31,022.89, 42,811.31 and 16,875.74

Step by Step Solution

1. Step 1: Write the proportion equation
   31,022.89 : 42,811.31 = 16,875.74 : x
2. Step 2: Convert to fraction form
   31,022.89/42,811.31 = 16,875.74/x
3. Step 3: Cross multiply
   31,022.89x = 42,811.31 × 16,875.74
4. Step 4: Simplify right side
   31,022.89x = 722,472,685.84
5. Step 5: Solve for x
   x = 722,472,685.84/31,022.89
6. Step 6: Final answer
   x = 23,288.38