Finding the Fourth Proportional to 67.92, 101.61 and 56.53

Step by Step Solution

1. Step 1: Write the proportion equation
   67.92 : 101.61 = 56.53 : x
2. Step 2: Convert to fraction form
   67.92/101.61 = 56.53/x
3. Step 3: Cross multiply
   67.92x = 101.61 × 56.53
4. Step 4: Simplify right side
   67.92x = 5,743.22
5. Step 5: Solve for x
   x = 5,743.22/67.92
6. Step 6: Final answer
   x = 84.56