Finding the Fourth Proportional to 263,949, 395,989.52 and 76,960.50

Step by Step Solution

1. Step 1: Write the proportion equation
   263,949 : 395,989.52 = 76,960.50 : x
2. Step 2: Convert to fraction form
   263,949/395,989.52 = 76,960.50/x
3. Step 3: Cross multiply
   263,949x = 395,989.52 × 76,960.50
4. Step 4: Simplify right side
   263,949x = 30,475,551,069.16
5. Step 5: Solve for x
   x = 30,475,551,069.16/263,949
6. Step 6: Final answer
   x = 115,460.00