Finding the Fourth Proportional to 67.56, 101.18 and 56.72

Step by Step Solution

1. Step 1: Write the proportion equation
   67.56 : 101.18 = 56.72 : x
2. Step 2: Convert to fraction form
   67.56/101.18 = 56.72/x
3. Step 3: Cross multiply
   67.56x = 101.18 × 56.72
4. Step 4: Simplify right side
   67.56x = 5,738.93
5. Step 5: Solve for x
   x = 5,738.93/67.56
6. Step 6: Final answer
   x = 84.95