Finding the Fourth Proportional to 111.82, 168 and 76.05

Step by Step Solution

1. Step 1: Write the proportion equation
   111.82 : 168 = 76.05 : x
2. Step 2: Convert to fraction form
   111.82/168 = 76.05/x
3. Step 3: Cross multiply
   111.82x = 168 × 76.05
4. Step 4: Simplify right side
   111.82x = 12,775.56
5. Step 5: Solve for x
   x = 12,775.56/111.82
6. Step 6: Final answer
   x = 114.25