Finding the Fourth Proportional to 111.59, 153.96 and 74.69

Step by Step Solution

1. Step 1: Write the proportion equation
   111.59 : 153.96 = 74.69 : x
2. Step 2: Convert to fraction form
   111.59/153.96 = 74.69/x
3. Step 3: Cross multiply
   111.59x = 153.96 × 74.69
4. Step 4: Simplify right side
   111.59x = 11,499.27
5. Step 5: Solve for x
   x = 11,499.27/111.59
6. Step 6: Final answer
   x = 103.05