Finding the Fourth Proportional to 108.69, 149.96 and 69.89

Step by Step Solution

1. Step 1: Write the proportion equation
   108.69 : 149.96 = 69.89 : x
2. Step 2: Convert to fraction form
   108.69/149.96 = 69.89/x
3. Step 3: Cross multiply
   108.69x = 149.96 × 69.89
4. Step 4: Simplify right side
   108.69x = 10,479.61
5. Step 5: Solve for x
   x = 10,479.61/108.69
6. Step 6: Final answer
   x = 96.42