Finding the Fourth Proportional to 78.82, 118.28 and 46.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78.82 : 118.28 = 46.34 : x
2. Step 2: Convert to fraction form
   78.82/118.28 = 46.34/x
3. Step 3: Cross multiply
   78.82x = 118.28 × 46.34
4. Step 4: Simplify right side
   78.82x = 5,481.10
5. Step 5: Solve for x
   x = 5,481.10/78.82
6. Step 6: Final answer
   x = 69.54