Finding the Fourth Proportional to 244,436,399.78, 338,210,494.42 and 213,139,710.14

Step by Step Solution

1. Step 1: Write the proportion equation
   244,436,399.78 : 338,210,494.42 = 213,139,710.14 : x
2. Step 2: Convert to fraction form
   244,436,399.78/338,210,494.42 = 213,139,710.14/x
3. Step 3: Cross multiply
   244,436,399.78x = 338,210,494.42 × 213,139,710.14
4. Step 4: Simplify right side
   244,436,399.78x = 72,086,086,746,984,880
5. Step 5: Solve for x
   x = 72,086,086,746,984,880/244,436,399.78
6. Step 6: Final answer
   x = 294,907,333.00