Finding the Fourth Proportional to 31,309.69, 43,207.47 and 17,162.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,309.69 : 43,207.47 = 17,162.56 : x
2. Step 2: Convert to fraction form
   31,309.69/43,207.47 = 17,162.56/x
3. Step 3: Cross multiply
   31,309.69x = 43,207.47 × 17,162.56
4. Step 4: Simplify right side
   31,309.69x = 741,550,796.32
5. Step 5: Solve for x
   x = 741,550,796.32/31,309.69
6. Step 6: Final answer
   x = 23,684.39