Finding the Fourth Proportional to 80.94, 121.31 and 46.72

Step by Step Solution

1. Step 1: Write the proportion equation
   80.94 : 121.31 = 46.72 : x
2. Step 2: Convert to fraction form
   80.94/121.31 = 46.72/x
3. Step 3: Cross multiply
   80.94x = 121.31 × 46.72
4. Step 4: Simplify right side
   80.94x = 5,667.60
5. Step 5: Solve for x
   x = 5,667.60/80.94
6. Step 6: Final answer
   x = 70.02