Finding the Fourth Proportional to 123.37, 184.93 and 42.15

Step by Step Solution

1. Step 1: Write the proportion equation
   123.37 : 184.93 = 42.15 : x
2. Step 2: Convert to fraction form
   123.37/184.93 = 42.15/x
3. Step 3: Cross multiply
   123.37x = 184.93 × 42.15
4. Step 4: Simplify right side
   123.37x = 7,794.80
5. Step 5: Solve for x
   x = 7,794.80/123.37
6. Step 6: Final answer
   x = 63.18