Finding the Fourth Proportional to 263,836.72, 395,751.60 and 64,156.56

Step by Step Solution

1. Step 1: Write the proportion equation
   263,836.72 : 395,751.60 = 64,156.56 : x
2. Step 2: Convert to fraction form
   263,836.72/395,751.60 = 64,156.56/x
3. Step 3: Cross multiply
   263,836.72x = 395,751.60 × 64,156.56
4. Step 4: Simplify right side
   263,836.72x = 25,390,061,270.50
5. Step 5: Solve for x
   x = 25,390,061,270.50/263,836.72
6. Step 6: Final answer
   x = 96,233.99