Finding the Fourth Proportional to 244,436,402.78, 338,210,498.56 and 213,139,713.14

Step by Step Solution

1. Step 1: Write the proportion equation
   244,436,402.78 : 338,210,498.56 = 213,139,713.14 : x
2. Step 2: Convert to fraction form
   244,436,402.78/338,210,498.56 = 213,139,713.14/x
3. Step 3: Cross multiply
   244,436,402.78x = 338,210,498.56 × 213,139,713.14
4. Step 4: Simplify right side
   244,436,402.78x = 72,086,088,644,014,784
5. Step 5: Solve for x
   x = 72,086,088,644,014,784/244,436,402.78
6. Step 6: Final answer
   x = 294,907,337.14