Finding the Fourth Proportional to 111.44, 153.72 and 69.42

Step by Step Solution

1. Step 1: Write the proportion equation
   111.44 : 153.72 = 69.42 : x
2. Step 2: Convert to fraction form
   111.44/153.72 = 69.42/x
3. Step 3: Cross multiply
   111.44x = 153.72 × 69.42
4. Step 4: Simplify right side
   111.44x = 10,671.24
5. Step 5: Solve for x
   x = 10,671.24/111.44
6. Step 6: Final answer
   x = 95.76