Finding the Fourth Proportional to 31,866.72, 43,976.28 and 17,719.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,866.72 : 43,976.28 = 17,719.68 : x
2. Step 2: Convert to fraction form
   31,866.72/43,976.28 = 17,719.68/x
3. Step 3: Cross multiply
   31,866.72x = 43,976.28 × 17,719.68
4. Step 4: Simplify right side
   31,866.72x = 779,245,609.19
5. Step 5: Solve for x
   x = 779,245,609.19/31,866.72
6. Step 6: Final answer
   x = 24,453.27