Finding the Fourth Proportional to 80.50, 111.06 and 45.52

Step by Step Solution

1. Step 1: Write the proportion equation
   80.50 : 111.06 = 45.52 : x
2. Step 2: Convert to fraction form
   80.50/111.06 = 45.52/x
3. Step 3: Cross multiply
   80.50x = 111.06 × 45.52
4. Step 4: Simplify right side
   80.50x = 5,055.45
5. Step 5: Solve for x
   x = 5,055.45/80.50
6. Step 6: Final answer
   x = 62.80