Finding the Fourth Proportional to 21,789,419.40, 30,069,035.42 and 12,000,774.41

Step by Step Solution

1. Step 1: Write the proportion equation
   21,789,419.40 : 30,069,035.42 = 12,000,774.41 : x
2. Step 2: Convert to fraction form
   21,789,419.40/30,069,035.42 = 12,000,774.41/x
3. Step 3: Cross multiply
   21,789,419.40x = 30,069,035.42 × 12,000,774.41
4. Step 4: Simplify right side
   21,789,419.40x = 360,851,710,591,370.50
5. Step 5: Solve for x
   x = 360,851,710,591,370.50/21,789,419.40
6. Step 6: Final answer
   x = 16,560,868.56