Finding the Fourth Proportional to 123.54, 185.24 and 42.35

Step by Step Solution

1. Step 1: Write the proportion equation
   123.54 : 185.24 = 42.35 : x
2. Step 2: Convert to fraction form
   123.54/185.24 = 42.35/x
3. Step 3: Cross multiply
   123.54x = 185.24 × 42.35
4. Step 4: Simplify right side
   123.54x = 7,843.78
5. Step 5: Solve for x
   x = 7,843.78/123.54
6. Step 6: Final answer
   x = 63.49