Finding the Fourth Proportional to 31,116.24, 42,940.46 and 16,969.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,116.24 : 42,940.46 = 16,969.16 : x
2. Step 2: Convert to fraction form
   31,116.24/42,940.46 = 16,969.16/x
3. Step 3: Cross multiply
   31,116.24x = 42,940.46 × 16,969.16
4. Step 4: Simplify right side
   31,116.24x = 728,663,536.21
5. Step 5: Solve for x
   x = 728,663,536.21/31,116.24
6. Step 6: Final answer
   x = 23,417.47