Finding the Fourth Proportional to 123.53, 185.23 and 42.34

Step by Step Solution

1. Step 1: Write the proportion equation
   123.53 : 185.23 = 42.34 : x
2. Step 2: Convert to fraction form
   123.53/185.23 = 42.34/x
3. Step 3: Cross multiply
   123.53x = 185.23 × 42.34
4. Step 4: Simplify right side
   123.53x = 7,842.64
5. Step 5: Solve for x
   x = 7,842.64/123.53
6. Step 6: Final answer
   x = 63.49