Finding the Fourth Proportional to 19,664,208,189.01, 27,139,092,690.98 and 12,895,721,140.31

Step by Step Solution

1. Step 1: Write the proportion equation
   19,664,208,189.01 : 27,139,092,690.98 = 12,895,721,140.31 : x
2. Step 2: Convert to fraction form
   19,664,208,189.01/27,139,092,690.98 = 12,895,721,140.31/x
3. Step 3: Cross multiply
   19,664,208,189.01x = 27,139,092,690.98 × 12,895,721,140.31
4. Step 4: Simplify right side
   19,664,208,189.01x = 349,978,171,343,903,391,744
5. Step 5: Solve for x
   x = 349,978,171,343,903,391,744/19,664,208,189.01
6. Step 6: Final answer
   x = 17,797,725,084.07