Finding the Fourth Proportional to 123.29, 184.88 and 42.09

Step by Step Solution

1. Step 1: Write the proportion equation
   123.29 : 184.88 = 42.09 : x
2. Step 2: Convert to fraction form
   123.29/184.88 = 42.09/x
3. Step 3: Cross multiply
   123.29x = 184.88 × 42.09
4. Step 4: Simplify right side
   123.29x = 7,781.01
5. Step 5: Solve for x
   x = 7,781.01/123.29
6. Step 6: Final answer
   x = 63.11