Finding the Fourth Proportional to 31,019.43, 42,806.94 and 16,872.36

Step by Step Solution

1. Step 1: Write the proportion equation
   31,019.43 : 42,806.94 = 16,872.36 : x
2. Step 2: Convert to fraction form
   31,019.43/42,806.94 = 16,872.36/x
3. Step 3: Cross multiply
   31,019.43x = 42,806.94 × 16,872.36
4. Step 4: Simplify right side
   31,019.43x = 722,254,102.18
5. Step 5: Solve for x
   x = 722,254,102.18/31,019.43
6. Step 6: Final answer
   x = 23,283.93