Finding the Fourth Proportional to 123.73, 185.49 and 42.53

Step by Step Solution

1. Step 1: Write the proportion equation
   123.73 : 185.49 = 42.53 : x
2. Step 2: Convert to fraction form
   123.73/185.49 = 42.53/x
3. Step 3: Cross multiply
   123.73x = 185.49 × 42.53
4. Step 4: Simplify right side
   123.73x = 7,887.96
5. Step 5: Solve for x
   x = 7,887.96/123.73
6. Step 6: Final answer
   x = 63.75