Finding the Fourth Proportional to 462,612, 638,404.56 and 250,644

Step by Step Solution

1. Step 1: Write the proportion equation
   462,612 : 638,404.56 = 250,644 : x
2. Step 2: Convert to fraction form
   462,612/638,404.56 = 250,644/x
3. Step 3: Cross multiply
   462,612x = 638,404.56 × 250,644
4. Step 4: Simplify right side
   462,612x = 160,012,272,536.64
5. Step 5: Solve for x
   x = 160,012,272,536.64/462,612
6. Step 6: Final answer
   x = 345,888.72