Finding the Fourth Proportional to 65,272.46, 90,069.20 and 38,413.37

Step by Step Solution

1. Step 1: Write the proportion equation
   65,272.46 : 90,069.20 = 38,413.37 : x
2. Step 2: Convert to fraction form
   65,272.46/90,069.20 = 38,413.37/x
3. Step 3: Cross multiply
   65,272.46x = 90,069.20 × 38,413.37
4. Step 4: Simplify right side
   65,272.46x = 3,459,861,150.89
5. Step 5: Solve for x
   x = 3,459,861,150.89/65,272.46
6. Step 6: Final answer
   x = 53,006.45