Finding the Fourth Proportional to 111.96, 154.58 and 82.98

Step by Step Solution

1. Step 1: Write the proportion equation
   111.96 : 154.58 = 82.98 : x
2. Step 2: Convert to fraction form
   111.96/154.58 = 82.98/x
3. Step 3: Cross multiply
   111.96x = 154.58 × 82.98
4. Step 4: Simplify right side
   111.96x = 12,826.63
5. Step 5: Solve for x
   x = 12,826.63/111.96
6. Step 6: Final answer
   x = 114.56