Finding the Fourth Proportional to 80.83, 111.55 and 43.99

Step by Step Solution

1. Step 1: Write the proportion equation
   80.83 : 111.55 = 43.99 : x
2. Step 2: Convert to fraction form
   80.83/111.55 = 43.99/x
3. Step 3: Cross multiply
   80.83x = 111.55 × 43.99
4. Step 4: Simplify right side
   80.83x = 4,906.93
5. Step 5: Solve for x
   x = 4,906.93/80.83
6. Step 6: Final answer
   x = 60.71