Finding the Fourth Proportional to 71,640,401.09, 107,461,768.01 and 20,522,221.25

Step by Step Solution

1. Step 1: Write the proportion equation
   71,640,401.09 : 107,461,768.01 = 20,522,221.25 : x
2. Step 2: Convert to fraction form
   71,640,401.09/107,461,768.01 = 20,522,221.25/x
3. Step 3: Cross multiply
   71,640,401.09x = 107,461,768.01 × 20,522,221.25
4. Step 4: Simplify right side
   71,640,401.09x = 2,205,354,178,377,472.25
5. Step 5: Solve for x
   x = 2,205,354,178,377,472.25/71,640,401.09
6. Step 6: Final answer
   x = 30,783,665.99