Finding the Fourth Proportional to 21,840,243,359,402, 30,128,109,132,256 and 13,504,065,310,000

Step by Step Solution

1. Step 1: Write the proportion equation
   21,840,243,359,402 : 30,128,109,132,256 = 13,504,065,310,000 : x
2. Step 2: Convert to fraction form
   21,840,243,359,402/30,128,109,132,256 = 13,504,065,310,000/x
3. Step 3: Cross multiply
   21,840,243,359,402x = 30,128,109,132,256 × 13,504,065,310,000
4. Step 4: Simplify right side
   21,840,243,359,402x = 406,851,953,388,792,420,325,392,384
5. Step 5: Solve for x
   x = 406,851,953,388,792,420,325,392,384/21,840,243,359,402
6. Step 6: Final answer
   x = 18,628,544,869,837.58