Finding the Fourth Proportional to 111.23, 153.53 and 69.76

Step by Step Solution

1. Step 1: Write the proportion equation
   111.23 : 153.53 = 69.76 : x
2. Step 2: Convert to fraction form
   111.23/153.53 = 69.76/x
3. Step 3: Cross multiply
   111.23x = 153.53 × 69.76
4. Step 4: Simplify right side
   111.23x = 10,710.25
5. Step 5: Solve for x
   x = 10,710.25/111.23
6. Step 6: Final answer
   x = 96.29