Finding the Fourth Proportional to 78.82, 118.18 and 30.73

Step by Step Solution

1. Step 1: Write the proportion equation
   78.82 : 118.18 = 30.73 : x
2. Step 2: Convert to fraction form
   78.82/118.18 = 30.73/x
3. Step 3: Cross multiply
   78.82x = 118.18 × 30.73
4. Step 4: Simplify right side
   78.82x = 3,631.67
5. Step 5: Solve for x
   x = 3,631.67/78.82
6. Step 6: Final answer
   x = 46.08