Finding the Fourth Proportional to 80.79, 111.48 and 45.82

Step by Step Solution

1. Step 1: Write the proportion equation
   80.79 : 111.48 = 45.82 : x
2. Step 2: Convert to fraction form
   80.79/111.48 = 45.82/x
3. Step 3: Cross multiply
   80.79x = 111.48 × 45.82
4. Step 4: Simplify right side
   80.79x = 5,107.82
5. Step 5: Solve for x
   x = 5,107.82/80.79
6. Step 6: Final answer
   x = 63.23