Finding the Fourth Proportional to 638,864,499.30, 957,635,400.15 and 347,115,200.10

Step by Step Solution

1. Step 1: Write the proportion equation
   638,864,499.30 : 957,635,400.15 = 347,115,200.10 : x
2. Step 2: Convert to fraction form
   638,864,499.30/957,635,400.15 = 347,115,200.10/x
3. Step 3: Cross multiply
   638,864,499.30x = 957,635,400.15 × 347,115,200.10
4. Step 4: Simplify right side
   638,864,499.30x = 332,409,803,545,910,848
5. Step 5: Solve for x
   x = 332,409,803,545,910,848/638,864,499.30
6. Step 6: Final answer
   x = 520,313,468.52