Finding the Fourth Proportional to 31,443.69, 43,395.17 and 18,019.29

Step by Step Solution

1. Step 1: Write the proportion equation
   31,443.69 : 43,395.17 = 18,019.29 : x
2. Step 2: Convert to fraction form
   31,443.69/43,395.17 = 18,019.29/x
3. Step 3: Cross multiply
   31,443.69x = 43,395.17 × 18,019.29
4. Step 4: Simplify right side
   31,443.69x = 781,950,062.73
5. Step 5: Solve for x
   x = 781,950,062.73/31,443.69
6. Step 6: Final answer
   x = 24,868.27