Finding the Fourth Proportional to 65,123.64, 89,850.78 and 36,440.33

Step by Step Solution

1. Step 1: Write the proportion equation
   65,123.64 : 89,850.78 = 36,440.33 : x
2. Step 2: Convert to fraction form
   65,123.64/89,850.78 = 36,440.33/x
3. Step 3: Cross multiply
   65,123.64x = 89,850.78 × 36,440.33
4. Step 4: Simplify right side
   65,123.64x = 3,274,191,624.70
5. Step 5: Solve for x
   x = 3,274,191,624.70/65,123.64
6. Step 6: Final answer
   x = 50,276.55