Finding the Fourth Proportional to 31,089.29, 42,903.22 and 16,942.13

Step by Step Solution

1. Step 1: Write the proportion equation
   31,089.29 : 42,903.22 = 16,942.13 : x
2. Step 2: Convert to fraction form
   31,089.29/42,903.22 = 16,942.13/x
3. Step 3: Cross multiply
   31,089.29x = 42,903.22 × 16,942.13
4. Step 4: Simplify right side
   31,089.29x = 726,871,673.79
5. Step 5: Solve for x
   x = 726,871,673.79/31,089.29
6. Step 6: Final answer
   x = 23,380.13