Finding the Fourth Proportional to 31,308.78, 43,206.96 and 17,162.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,308.78 : 43,206.96 = 17,162.16 : x
2. Step 2: Convert to fraction form
   31,308.78/43,206.96 = 17,162.16/x
3. Step 3: Cross multiply
   31,308.78x = 43,206.96 × 17,162.16
4. Step 4: Simplify right side
   31,308.78x = 741,524,760.63
5. Step 5: Solve for x
   x = 741,524,760.63/31,308.78
6. Step 6: Final answer
   x = 23,684.24