Finding the Fourth Proportional to 123.32, 184.88 and 42.12

Step by Step Solution

1. Step 1: Write the proportion equation
   123.32 : 184.88 = 42.12 : x
2. Step 2: Convert to fraction form
   123.32/184.88 = 42.12/x
3. Step 3: Cross multiply
   123.32x = 184.88 × 42.12
4. Step 4: Simplify right side
   123.32x = 7,786.94
5. Step 5: Solve for x
   x = 7,786.94/123.32
6. Step 6: Final answer
   x = 63.14