Finding the Fourth Proportional to 111.61, 154.04 and 67.92

Step by Step Solution

1. Step 1: Write the proportion equation
   111.61 : 154.04 = 67.92 : x
2. Step 2: Convert to fraction form
   111.61/154.04 = 67.92/x
3. Step 3: Cross multiply
   111.61x = 154.04 × 67.92
4. Step 4: Simplify right side
   111.61x = 10,462.35
5. Step 5: Solve for x
   x = 10,462.35/111.61
6. Step 6: Final answer
   x = 93.74