Finding the Fourth Proportional to 263,796.52, 395,743.38 and 86,313.46

Step by Step Solution

1. Step 1: Write the proportion equation
   263,796.52 : 395,743.38 = 86,313.46 : x
2. Step 2: Convert to fraction form
   263,796.52/395,743.38 = 86,313.46/x
3. Step 3: Cross multiply
   263,796.52x = 395,743.38 × 86,313.46
4. Step 4: Simplify right side
   263,796.52x = 34,157,980,399.89
5. Step 5: Solve for x
   x = 34,157,980,399.89/263,796.52
6. Step 6: Final answer
   x = 129,486.09