Finding the Fourth Proportional to 31,413.78, 43,351.43 and 17,266.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,413.78 : 43,351.43 = 17,266.50 : x
2. Step 2: Convert to fraction form
   31,413.78/43,351.43 = 17,266.50/x
3. Step 3: Cross multiply
   31,413.78x = 43,351.43 × 17,266.50
4. Step 4: Simplify right side
   31,413.78x = 748,527,379.76
5. Step 5: Solve for x
   x = 748,527,379.76/31,413.78
6. Step 6: Final answer
   x = 23,827.99