Finding the Fourth Proportional to 401,463, 554,018.94 and 222,615

Step by Step Solution

1. Step 1: Write the proportion equation
   401,463 : 554,018.94 = 222,615 : x
2. Step 2: Convert to fraction form
   401,463/554,018.94 = 222,615/x
3. Step 3: Cross multiply
   401,463x = 554,018.94 × 222,615
4. Step 4: Simplify right side
   401,463x = 123,332,926,328.10
5. Step 5: Solve for x
   x = 123,332,926,328.10/401,463
6. Step 6: Final answer
   x = 307,208.70