Finding the Fourth Proportional to 81,082.72, 111,920.88 and 47,548

Step by Step Solution

1. Step 1: Write the proportion equation
   81,082.72 : 111,920.88 = 47,548 : x
2. Step 2: Convert to fraction form
   81,082.72/111,920.88 = 47,548/x
3. Step 3: Cross multiply
   81,082.72x = 111,920.88 × 47,548
4. Step 4: Simplify right side
   81,082.72x = 5,321,614,002.24
5. Step 5: Solve for x
   x = 5,321,614,002.24/81,082.72
6. Step 6: Final answer
   x = 65,631.91