Finding the Fourth Proportional to 21,885,111.98, 30,205,204.80 and 12,723,069.14

Step by Step Solution

1. Step 1: Write the proportion equation
   21,885,111.98 : 30,205,204.80 = 12,723,069.14 : x
2. Step 2: Convert to fraction form
   21,885,111.98/30,205,204.80 = 12,723,069.14/x
3. Step 3: Cross multiply
   21,885,111.98x = 30,205,204.80 × 12,723,069.14
4. Step 4: Simplify right side
   21,885,111.98x = 384,302,909,058,259.88
5. Step 5: Solve for x
   x = 384,302,909,058,259.88/21,885,111.98
6. Step 6: Final answer
   x = 17,560,015.66