Finding the Fourth Proportional to 14,156,766.40, 21,131,799.83 and 12,147,919.42

Step by Step Solution

1. Step 1: Write the proportion equation
   14,156,766.40 : 21,131,799.83 = 12,147,919.42 : x
2. Step 2: Convert to fraction form
   14,156,766.40/21,131,799.83 = 12,147,919.42/x
3. Step 3: Cross multiply
   14,156,766.40x = 21,131,799.83 × 12,147,919.42
4. Step 4: Simplify right side
   14,156,766.40x = 256,707,401,534,409.69
5. Step 5: Solve for x
   x = 256,707,401,534,409.69/14,156,766.40
6. Step 6: Final answer
   x = 18,133,194.71