Finding the Fourth Proportional to 403,622.09, 556,995.89 and 222,329.82

Step by Step Solution

1. Step 1: Write the proportion equation
   403,622.09 : 556,995.89 = 222,329.82 : x
2. Step 2: Convert to fraction form
   403,622.09/556,995.89 = 222,329.82/x
3. Step 3: Cross multiply
   403,622.09x = 556,995.89 × 222,329.82
4. Step 4: Simplify right side
   403,622.09x = 123,836,795,127.78
5. Step 5: Solve for x
   x = 123,836,795,127.78/403,622.09
6. Step 6: Final answer
   x = 306,813.72