Finding the Fourth Proportional to 111.53, 153.82 and 74.62

Step by Step Solution

1. Step 1: Write the proportion equation
   111.53 : 153.82 = 74.62 : x
2. Step 2: Convert to fraction form
   111.53/153.82 = 74.62/x
3. Step 3: Cross multiply
   111.53x = 153.82 × 74.62
4. Step 4: Simplify right side
   111.53x = 11,477.91
5. Step 5: Solve for x
   x = 11,477.91/111.53
6. Step 6: Final answer
   x = 102.92