Finding the Fourth Proportional to 123.41, 185.12 and 42.26

Step by Step Solution

1. Step 1: Write the proportion equation
   123.41 : 185.12 = 42.26 : x
2. Step 2: Convert to fraction form
   123.41/185.12 = 42.26/x
3. Step 3: Cross multiply
   123.41x = 185.12 × 42.26
4. Step 4: Simplify right side
   123.41x = 7,823.17
5. Step 5: Solve for x
   x = 7,823.17/123.41
6. Step 6: Final answer
   x = 63.39