Finding the Fourth Proportional to 80,967.20, 121,452.72 and 31,072.16

Step by Step Solution

1. Step 1: Write the proportion equation
   80,967.20 : 121,452.72 = 31,072.16 : x
2. Step 2: Convert to fraction form
   80,967.20/121,452.72 = 31,072.16/x
3. Step 3: Cross multiply
   80,967.20x = 121,452.72 × 31,072.16
4. Step 4: Simplify right side
   80,967.20x = 3,773,798,348.28
5. Step 5: Solve for x
   x = 3,773,798,348.28/80,967.20
6. Step 6: Final answer
   x = 46,608.98