Finding the Fourth Proportional to 111.98, 154.50 and 68.29

Step by Step Solution

1. Step 1: Write the proportion equation
   111.98 : 154.50 = 68.29 : x
2. Step 2: Convert to fraction form
   111.98/154.50 = 68.29/x
3. Step 3: Cross multiply
   111.98x = 154.50 × 68.29
4. Step 4: Simplify right side
   111.98x = 10,550.81
5. Step 5: Solve for x
   x = 10,550.81/111.98
6. Step 6: Final answer
   x = 94.22