Finding the Fourth Proportional to 469,105,386.57, 647,353,108.06 and 257,411,566.82

Step by Step Solution

1. Step 1: Write the proportion equation
   469,105,386.57 : 647,353,108.06 = 257,411,566.82 : x
2. Step 2: Convert to fraction form
   469,105,386.57/647,353,108.06 = 257,411,566.82/x
3. Step 3: Cross multiply
   469,105,386.57x = 647,353,108.06 × 257,411,566.82
4. Step 4: Simplify right side
   469,105,386.57x = 166,636,177,832,496,224
5. Step 5: Solve for x
   x = 166,636,177,832,496,224/469,105,386.57
6. Step 6: Final answer
   x = 355,221,198.91