Finding the Fourth Proportional to 1,123,298,609.50, 1,685,177,721.48 and 386,272,796.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,298,609.50 : 1,685,177,721.48 = 386,272,796.09 : x
2. Step 2: Convert to fraction form
   1,123,298,609.50/1,685,177,721.48 = 386,272,796.09/x
3. Step 3: Cross multiply
   1,123,298,609.50x = 1,685,177,721.48 × 386,272,796.09
4. Step 4: Simplify right side
   1,123,298,609.50x = 650,938,310,384,654,848
5. Step 5: Solve for x
   x = 650,938,310,384,654,848/1,123,298,609.50
6. Step 6: Final answer
   x = 579,488,218.79