Finding the Fourth Proportional to 111.43, 153.71 and 69.97

Step by Step Solution

1. Step 1: Write the proportion equation
   111.43 : 153.71 = 69.97 : x
2. Step 2: Convert to fraction form
   111.43/153.71 = 69.97/x
3. Step 3: Cross multiply
   111.43x = 153.71 × 69.97
4. Step 4: Simplify right side
   111.43x = 10,755.09
5. Step 5: Solve for x
   x = 10,755.09/111.43
6. Step 6: Final answer
   x = 96.52