Finding the Fourth Proportional to 470,071,493.88, 648,014,978.34 and 328,503,189.48

Step by Step Solution

1. Step 1: Write the proportion equation
   470,071,493.88 : 648,014,978.34 = 328,503,189.48 : x
2. Step 2: Convert to fraction form
   470,071,493.88/648,014,978.34 = 328,503,189.48/x
3. Step 3: Cross multiply
   470,071,493.88x = 648,014,978.34 × 328,503,189.48
4. Step 4: Simplify right side
   470,071,493.88x = 212,874,987,215,503,136
5. Step 5: Solve for x
   x = 212,874,987,215,503,136/470,071,493.88
6. Step 6: Final answer
   x = 452,856,618.59