Finding the Fourth Proportional to 80,710.72, 111,364.16 and 47,170.24

Step by Step Solution

1. Step 1: Write the proportion equation
   80,710.72 : 111,364.16 = 47,170.24 : x
2. Step 2: Convert to fraction form
   80,710.72/111,364.16 = 47,170.24/x
3. Step 3: Cross multiply
   80,710.72x = 111,364.16 × 47,170.24
4. Step 4: Simplify right side
   80,710.72x = 5,253,074,154.60
5. Step 5: Solve for x
   x = 5,253,074,154.60/80,710.72
6. Step 6: Final answer
   x = 65,085.21