Finding the Fourth Proportional to 89,408.42, 123,282.63 and 65,166.56

Step by Step Solution

1. Step 1: Write the proportion equation
   89,408.42 : 123,282.63 = 65,166.56 : x
2. Step 2: Convert to fraction form
   89,408.42/123,282.63 = 65,166.56/x
3. Step 3: Cross multiply
   89,408.42x = 123,282.63 × 65,166.56
4. Step 4: Simplify right side
   89,408.42x = 8,033,904,904.85
5. Step 5: Solve for x
   x = 8,033,904,904.85/89,408.42
6. Step 6: Final answer
   x = 89,856.25