Finding the Fourth Proportional to 31,043.84, 42,839.16 and 16,896.80

Step by Step Solution

1. Step 1: Write the proportion equation
   31,043.84 : 42,839.16 = 16,896.80 : x
2. Step 2: Convert to fraction form
   31,043.84/42,839.16 = 16,896.80/x
3. Step 3: Cross multiply
   31,043.84x = 42,839.16 × 16,896.80
4. Step 4: Simplify right side
   31,043.84x = 723,844,718.69
5. Step 5: Solve for x
   x = 723,844,718.69/31,043.84
6. Step 6: Final answer
   x = 23,316.86