Finding the Fourth Proportional to 67.02, 100.62 and 56.94

Step by Step Solution

1. Step 1: Write the proportion equation
   67.02 : 100.62 = 56.94 : x
2. Step 2: Convert to fraction form
   67.02/100.62 = 56.94/x
3. Step 3: Cross multiply
   67.02x = 100.62 × 56.94
4. Step 4: Simplify right side
   67.02x = 5,729.30
5. Step 5: Solve for x
   x = 5,729.30/67.02
6. Step 6: Final answer
   x = 85.49