Finding the Fourth Proportional to 469,105,388.57, 647,353,110.82 and 257,411,568.82

Step by Step Solution

1. Step 1: Write the proportion equation
   469,105,388.57 : 647,353,110.82 = 257,411,568.82 : x
2. Step 2: Convert to fraction form
   469,105,388.57/647,353,110.82 = 257,411,568.82/x
3. Step 3: Cross multiply
   469,105,388.57x = 647,353,110.82 × 257,411,568.82
4. Step 4: Simplify right side
   469,105,388.57x = 166,636,179,836,683,520
5. Step 5: Solve for x
   x = 166,636,179,836,683,520/469,105,388.57
6. Step 6: Final answer
   x = 355,221,201.67