Finding the Fourth Proportional to 21,910,469, 30,237,337.50 and 12,120,744.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,910,469 : 30,237,337.50 = 12,120,744.42 : x
2. Step 2: Convert to fraction form
   21,910,469/30,237,337.50 = 12,120,744.42/x
3. Step 3: Cross multiply
   21,910,469x = 30,237,337.50 × 12,120,744.42
4. Step 4: Simplify right side
   21,910,469x = 366,499,039,778,781.75
5. Step 5: Solve for x
   x = 366,499,039,778,781.75/21,910,469
6. Step 6: Final answer
   x = 16,727,119.80