Finding the Fourth Proportional to 72,514.83, 99,843.06 and 65,871.78

Step by Step Solution

1. Step 1: Write the proportion equation
   72,514.83 : 99,843.06 = 65,871.78 : x
2. Step 2: Convert to fraction form
   72,514.83/99,843.06 = 65,871.78/x
3. Step 3: Cross multiply
   72,514.83x = 99,843.06 × 65,871.78
4. Step 4: Simplify right side
   72,514.83x = 6,576,840,082.85
5. Step 5: Solve for x
   x = 6,576,840,082.85/72,514.83
6. Step 6: Final answer
   x = 90,696.48