Finding the Fourth Proportional to 67.55, 100.94 and 56.75

Step by Step Solution

1. Step 1: Write the proportion equation
   67.55 : 100.94 = 56.75 : x
2. Step 2: Convert to fraction form
   67.55/100.94 = 56.75/x
3. Step 3: Cross multiply
   67.55x = 100.94 × 56.75
4. Step 4: Simplify right side
   67.55x = 5,728.35
5. Step 5: Solve for x
   x = 5,728.35/67.55
6. Step 6: Final answer
   x = 84.80