Finding the Fourth Proportional to 418,468.25, 627,978.86 and 196,869.53

Step by Step Solution

1. Step 1: Write the proportion equation
   418,468.25 : 627,978.86 = 196,869.53 : x
2. Step 2: Convert to fraction form
   418,468.25/627,978.86 = 196,869.53/x
3. Step 3: Cross multiply
   418,468.25x = 627,978.86 × 196,869.53
4. Step 4: Simplify right side
   418,468.25x = 123,629,902,033.79
5. Step 5: Solve for x
   x = 123,629,902,033.79/418,468.25
6. Step 6: Final answer
   x = 295,434.37