Finding the Fourth Proportional to 67.78, 101.49 and 46.09

Step by Step Solution

1. Step 1: Write the proportion equation
   67.78 : 101.49 = 46.09 : x
2. Step 2: Convert to fraction form
   67.78/101.49 = 46.09/x
3. Step 3: Cross multiply
   67.78x = 101.49 × 46.09
4. Step 4: Simplify right side
   67.78x = 4,677.67
5. Step 5: Solve for x
   x = 4,677.67/67.78
6. Step 6: Final answer
   x = 69.01