Finding the Fourth Proportional to 123.94, 185.91 and 42.77

Step by Step Solution

1. Step 1: Write the proportion equation
   123.94 : 185.91 = 42.77 : x
2. Step 2: Convert to fraction form
   123.94/185.91 = 42.77/x
3. Step 3: Cross multiply
   123.94x = 185.91 × 42.77
4. Step 4: Simplify right side
   123.94x = 7,951.37
5. Step 5: Solve for x
   x = 7,951.37/123.94
6. Step 6: Final answer
   x = 64.16