Finding the Fourth Proportional to 111.41, 153.69 and 69.89

Step by Step Solution

1. Step 1: Write the proportion equation
   111.41 : 153.69 = 69.89 : x
2. Step 2: Convert to fraction form
   111.41/153.69 = 69.89/x
3. Step 3: Cross multiply
   111.41x = 153.69 × 69.89
4. Step 4: Simplify right side
   111.41x = 10,740.45
5. Step 5: Solve for x
   x = 10,740.45/111.41
6. Step 6: Final answer
   x = 96.40