Finding the Fourth Proportional to 31,309.79, 43,205.54 and 17,162.73

Step by Step Solution

1. Step 1: Write the proportion equation
   31,309.79 : 43,205.54 = 17,162.73 : x
2. Step 2: Convert to fraction form
   31,309.79/43,205.54 = 17,162.73/x
3. Step 3: Cross multiply
   31,309.79x = 43,205.54 × 17,162.73
4. Step 4: Simplify right side
   31,309.79x = 741,524,931.71
5. Step 5: Solve for x
   x = 741,524,931.71/31,309.79
6. Step 6: Final answer
   x = 23,683.49