Finding the Fourth Proportional to 67.39, 100.56 and 53.52

Step by Step Solution

1. Step 1: Write the proportion equation
   67.39 : 100.56 = 53.52 : x
2. Step 2: Convert to fraction form
   67.39/100.56 = 53.52/x
3. Step 3: Cross multiply
   67.39x = 100.56 × 53.52
4. Step 4: Simplify right side
   67.39x = 5,382.35
5. Step 5: Solve for x
   x = 5,382.35/67.39
6. Step 6: Final answer
   x = 79.87