Finding the Fourth Proportional to 9,189,807,362.43, 12,681,599,343.61 and 5,120,498,814.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,189,807,362.43 : 12,681,599,343.61 = 5,120,498,814.54 : x
2. Step 2: Convert to fraction form
   9,189,807,362.43/12,681,599,343.61 = 5,120,498,814.54/x
3. Step 3: Cross multiply
   9,189,807,362.43x = 12,681,599,343.61 × 5,120,498,814.54
4. Step 4: Simplify right side
   9,189,807,362.43x = 64,936,114,405,395,759,104
5. Step 5: Solve for x
   x = 64,936,114,405,395,759,104/9,189,807,362.43
6. Step 6: Final answer
   x = 7,066,101,806.54