Finding the Fourth Proportional to 67.22, 100.78 and 34.69

Step by Step Solution

1. Step 1: Write the proportion equation
   67.22 : 100.78 = 34.69 : x
2. Step 2: Convert to fraction form
   67.22/100.78 = 34.69/x
3. Step 3: Cross multiply
   67.22x = 100.78 × 34.69
4. Step 4: Simplify right side
   67.22x = 3,495.72
5. Step 5: Solve for x
   x = 3,495.72/67.22
6. Step 6: Final answer
   x = 52.00