Finding the Fourth Proportional to 21,921,900.05, 30,741,048.55 and 21,921,900.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,921,900.05 : 30,741,048.55 = 21,921,900.05 : x
2. Step 2: Convert to fraction form
   21,921,900.05/30,741,048.55 = 21,921,900.05/x
3. Step 3: Cross multiply
   21,921,900.05x = 30,741,048.55 × 21,921,900.05
4. Step 4: Simplify right side
   21,921,900.05x = 673,902,193,745,297.50
5. Step 5: Solve for x
   x = 673,902,193,745,297.50/21,921,900.05
6. Step 6: Final answer
   x = 30,741,048.55