Finding the Fourth Proportional to 360,978.67, 498,134.41 and 199,822.33

Step by Step Solution

1. Step 1: Write the proportion equation
   360,978.67 : 498,134.41 = 199,822.33 : x
2. Step 2: Convert to fraction form
   360,978.67/498,134.41 = 199,822.33/x
3. Step 3: Cross multiply
   360,978.67x = 498,134.41 × 199,822.33
4. Step 4: Simplify right side
   360,978.67x = 99,538,378,459.38
5. Step 5: Solve for x
   x = 99,538,378,459.38/360,978.67
6. Step 6: Final answer
   x = 275,745.87