Finding the Fourth Proportional to 123.96, 185.94 and 42.76

Step by Step Solution

1. Step 1: Write the proportion equation
   123.96 : 185.94 = 42.76 : x
2. Step 2: Convert to fraction form
   123.96/185.94 = 42.76/x
3. Step 3: Cross multiply
   123.96x = 185.94 × 42.76
4. Step 4: Simplify right side
   123.96x = 7,950.79
5. Step 5: Solve for x
   x = 7,950.79/123.96
6. Step 6: Final answer
   x = 64.14