Finding the Fourth Proportional to 67.73, 101.63 and 42.05

Step by Step Solution

1. Step 1: Write the proportion equation
   67.73 : 101.63 = 42.05 : x
2. Step 2: Convert to fraction form
   67.73/101.63 = 42.05/x
3. Step 3: Cross multiply
   67.73x = 101.63 × 42.05
4. Step 4: Simplify right side
   67.73x = 4,272.93
5. Step 5: Solve for x
   x = 4,272.93/67.73
6. Step 6: Final answer
   x = 63.09