Finding the Fourth Proportional to 21,062,166, 31,593,249 and 5,105,814

Step by Step Solution

1. Step 1: Write the proportion equation
   21,062,166 : 31,593,249 = 5,105,814 : x
2. Step 2: Convert to fraction form
   21,062,166/31,593,249 = 5,105,814/x
3. Step 3: Cross multiply
   21,062,166x = 31,593,249 × 5,105,814
4. Step 4: Simplify right side
   21,062,166x = 161,309,253,049,686
5. Step 5: Solve for x
   x = 161,309,253,049,686/21,062,166
6. Step 6: Final answer
   x = 7,658,721