Finding the Fourth Proportional to 65,087.25, 89,819.76 and 36,406.57

Step by Step Solution

1. Step 1: Write the proportion equation
   65,087.25 : 89,819.76 = 36,406.57 : x
2. Step 2: Convert to fraction form
   65,087.25/89,819.76 = 36,406.57/x
3. Step 3: Cross multiply
   65,087.25x = 89,819.76 × 36,406.57
4. Step 4: Simplify right side
   65,087.25x = 3,270,029,379.82
5. Step 5: Solve for x
   x = 3,270,029,379.82/65,087.25
6. Step 6: Final answer
   x = 50,240.71