Finding the Fourth Proportional to 663,871,055.34, 995,792,908.34 and 221,245,878.84

Step by Step Solution

1. Step 1: Write the proportion equation
   663,871,055.34 : 995,792,908.34 = 221,245,878.84 : x
2. Step 2: Convert to fraction form
   663,871,055.34/995,792,908.34 = 221,245,878.84/x
3. Step 3: Cross multiply
   663,871,055.34x = 995,792,908.34 × 221,245,878.84
4. Step 4: Simplify right side
   663,871,055.34x = 220,315,077,148,322,880
5. Step 5: Solve for x
   x = 220,315,077,148,322,880/663,871,055.34
6. Step 6: Final answer
   x = 331,864,260.95