Finding the Fourth Proportional to 31,306.89, 43,205.27 and 18,567.61

Step by Step Solution

1. Step 1: Write the proportion equation
   31,306.89 : 43,205.27 = 18,567.61 : x
2. Step 2: Convert to fraction form
   31,306.89/43,205.27 = 18,567.61/x
3. Step 3: Cross multiply
   31,306.89x = 43,205.27 × 18,567.61
4. Step 4: Simplify right side
   31,306.89x = 802,218,802.15
5. Step 5: Solve for x
   x = 802,218,802.15/31,306.89
6. Step 6: Final answer
   x = 25,624.35