Finding the Fourth Proportional to 8,616,158,737.39, 12,897,730,369.01 and 5,621,774,191.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,616,158,737.39 : 12,897,730,369.01 = 5,621,774,191.57 : x
2. Step 2: Convert to fraction form
   8,616,158,737.39/12,897,730,369.01 = 5,621,774,191.57/x
3. Step 3: Cross multiply
   8,616,158,737.39x = 12,897,730,369.01 × 5,621,774,191.57
4. Step 4: Simplify right side
   8,616,158,737.39x = 72,508,127,718,300,909,568
5. Step 5: Solve for x
   x = 72,508,127,718,300,909,568/8,616,158,737.39
6. Step 6: Final answer
   x = 8,415,365,817.68