Finding the Fourth Proportional to 31,266.72, 43,148.22 and 17,120.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,266.72 : 43,148.22 = 17,120.88 : x
2. Step 2: Convert to fraction form
   31,266.72/43,148.22 = 17,120.88/x
3. Step 3: Cross multiply
   31,266.72x = 43,148.22 × 17,120.88
4. Step 4: Simplify right side
   31,266.72x = 738,735,496.83
5. Step 5: Solve for x
   x = 738,735,496.83/31,266.72
6. Step 6: Final answer
   x = 23,626.89