Finding the Fourth Proportional to 401,463.25, 554,019.29 and 222,615.25

Step by Step Solution

1. Step 1: Write the proportion equation
   401,463.25 : 554,019.29 = 222,615.25 : x
2. Step 2: Convert to fraction form
   401,463.25/554,019.29 = 222,615.25/x
3. Step 3: Cross multiply
   401,463.25x = 554,019.29 × 222,615.25
4. Step 4: Simplify right side
   401,463.25x = 123,333,141,635.10
5. Step 5: Solve for x
   x = 123,333,141,635.10/401,463.25
6. Step 6: Final answer
   x = 307,209.05