Finding the Fourth Proportional to 111.81, 154.25 and 67.54

Step by Step Solution

1. Step 1: Write the proportion equation
   111.81 : 154.25 = 67.54 : x
2. Step 2: Convert to fraction form
   111.81/154.25 = 67.54/x
3. Step 3: Cross multiply
   111.81x = 154.25 × 67.54
4. Step 4: Simplify right side
   111.81x = 10,417.43
5. Step 5: Solve for x
   x = 10,417.43/111.81
6. Step 6: Final answer
   x = 93.17