Finding the Fourth Proportional to 111.98, 154.61 and 68.34

Step by Step Solution

1. Step 1: Write the proportion equation
   111.98 : 154.61 = 68.34 : x
2. Step 2: Convert to fraction form
   111.98/154.61 = 68.34/x
3. Step 3: Cross multiply
   111.98x = 154.61 × 68.34
4. Step 4: Simplify right side
   111.98x = 10,566.54
5. Step 5: Solve for x
   x = 10,566.54/111.98
6. Step 6: Final answer
   x = 94.36