Finding the Fourth Proportional to 23,120.83, 31,909.78 and 17,169.49

Step by Step Solution

1. Step 1: Write the proportion equation
   23,120.83 : 31,909.78 = 17,169.49 : x
2. Step 2: Convert to fraction form
   23,120.83/31,909.78 = 17,169.49/x
3. Step 3: Cross multiply
   23,120.83x = 31,909.78 × 17,169.49
4. Step 4: Simplify right side
   23,120.83x = 547,874,648.61
5. Step 5: Solve for x
   x = 547,874,648.61/23,120.83
6. Step 6: Final answer
   x = 23,696.15