Finding the Fourth Proportional to 287,103,875.82, 396,151,086.33 and 161,636,560.62

Step by Step Solution

1. Step 1: Write the proportion equation
   287,103,875.82 : 396,151,086.33 = 161,636,560.62 : x
2. Step 2: Convert to fraction form
   287,103,875.82/396,151,086.33 = 161,636,560.62/x
3. Step 3: Cross multiply
   287,103,875.82x = 396,151,086.33 × 161,636,560.62
4. Step 4: Simplify right side
   287,103,875.82x = 64,032,499,080,257,896
5. Step 5: Solve for x
   x = 64,032,499,080,257,896/287,103,875.82
6. Step 6: Final answer
   x = 223,029,030.51