Finding the Fourth Proportional to 67.50, 93.15 and 51.18

Step by Step Solution

1. Step 1: Write the proportion equation
   67.50 : 93.15 = 51.18 : x
2. Step 2: Convert to fraction form
   67.50/93.15 = 51.18/x
3. Step 3: Cross multiply
   67.50x = 93.15 × 51.18
4. Step 4: Simplify right side
   67.50x = 4,767.42
5. Step 5: Solve for x
   x = 4,767.42/67.50
6. Step 6: Final answer
   x = 70.63