Finding the Fourth Proportional to 80.56, 120.78 and 44.00

Step by Step Solution

1. Step 1: Write the proportion equation
   80.56 : 120.78 = 44.00 : x
2. Step 2: Convert to fraction form
   80.56/120.78 = 44.00/x
3. Step 3: Cross multiply
   80.56x = 120.78 × 44.00
4. Step 4: Simplify right side
   80.56x = 5,313.72
5. Step 5: Solve for x
   x = 5,313.72/80.56
6. Step 6: Final answer
   x = 65.96