Finding the Fourth Proportional to 111.93, 154.42 and 69.91

Step by Step Solution

1. Step 1: Write the proportion equation
   111.93 : 154.42 = 69.91 : x
2. Step 2: Convert to fraction form
   111.93/154.42 = 69.91/x
3. Step 3: Cross multiply
   111.93x = 154.42 × 69.91
4. Step 4: Simplify right side
   111.93x = 10,794.38
5. Step 5: Solve for x
   x = 10,794.38/111.93
6. Step 6: Final answer
   x = 96.44