Finding the Fourth Proportional to 111.83, 154.31 and 68.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111.83 : 154.31 = 68.16 : x
2. Step 2: Convert to fraction form
   111.83/154.31 = 68.16/x
3. Step 3: Cross multiply
   111.83x = 154.31 × 68.16
4. Step 4: Simplify right side
   111.83x = 10,517.17
5. Step 5: Solve for x
   x = 10,517.17/111.83
6. Step 6: Final answer
   x = 94.05