Finding the Fourth Proportional to 67.56, 101.52 and 51.60

Step by Step Solution

1. Step 1: Write the proportion equation
   67.56 : 101.52 = 51.60 : x
2. Step 2: Convert to fraction form
   67.56/101.52 = 51.60/x
3. Step 3: Cross multiply
   67.56x = 101.52 × 51.60
4. Step 4: Simplify right side
   67.56x = 5,238.43
5. Step 5: Solve for x
   x = 5,238.43/67.56
6. Step 6: Final answer
   x = 77.54