Finding the Fourth Proportional to 31,144.92, 42,979.59 and 16,997.73

Step by Step Solution

1. Step 1: Write the proportion equation
   31,144.92 : 42,979.59 = 16,997.73 : x
2. Step 2: Convert to fraction form
   31,144.92/42,979.59 = 16,997.73/x
3. Step 3: Cross multiply
   31,144.92x = 42,979.59 × 16,997.73
4. Step 4: Simplify right side
   31,144.92x = 730,555,466.33
5. Step 5: Solve for x
   x = 730,555,466.33/31,144.92
6. Step 6: Final answer
   x = 23,456.65