Finding the Fourth Proportional to 31,002.98, 42,782.19 and 17,390.27

Step by Step Solution

1. Step 1: Write the proportion equation
   31,002.98 : 42,782.19 = 17,390.27 : x
2. Step 2: Convert to fraction form
   31,002.98/42,782.19 = 17,390.27/x
3. Step 3: Cross multiply
   31,002.98x = 42,782.19 × 17,390.27
4. Step 4: Simplify right side
   31,002.98x = 743,993,621.38
5. Step 5: Solve for x
   x = 743,993,621.38/31,002.98
6. Step 6: Final answer
   x = 23,997.49