Finding the Fourth Proportional to 111.42, 153.52 and 107.37

Step by Step Solution

1. Step 1: Write the proportion equation
   111.42 : 153.52 = 107.37 : x
2. Step 2: Convert to fraction form
   111.42/153.52 = 107.37/x
3. Step 3: Cross multiply
   111.42x = 153.52 × 107.37
4. Step 4: Simplify right side
   111.42x = 16,483.17
5. Step 5: Solve for x
   x = 16,483.17/111.42
6. Step 6: Final answer
   x = 147.94