Finding the Fourth Proportional to 287,103,871.82, 396,151,080.81 and 161,636,556.62

Step by Step Solution

1. Step 1: Write the proportion equation
   287,103,871.82 : 396,151,080.81 = 161,636,556.62 : x
2. Step 2: Convert to fraction form
   287,103,871.82/396,151,080.81 = 161,636,556.62/x
3. Step 3: Cross multiply
   287,103,871.82x = 396,151,080.81 × 161,636,556.62
4. Step 4: Simplify right side
   287,103,871.82x = 64,032,496,603,419,760
5. Step 5: Solve for x
   x = 64,032,496,603,419,760/287,103,871.82
6. Step 6: Final answer
   x = 223,029,024.99