Finding the Fourth Proportional to 111.42, 153.83 and 74.63

Step by Step Solution

1. Step 1: Write the proportion equation
   111.42 : 153.83 = 74.63 : x
2. Step 2: Convert to fraction form
   111.42/153.83 = 74.63/x
3. Step 3: Cross multiply
   111.42x = 153.83 × 74.63
4. Step 4: Simplify right side
   111.42x = 11,480.33
5. Step 5: Solve for x
   x = 11,480.33/111.42
6. Step 6: Final answer
   x = 103.04