Finding the Fourth Proportional to 287,737,982.57, 397,062,112.59 and 162,282,680.15

Step by Step Solution

1. Step 1: Write the proportion equation
   287,737,982.57 : 397,062,112.59 = 162,282,680.15 : x
2. Step 2: Convert to fraction form
   287,737,982.57/397,062,112.59 = 162,282,680.15/x
3. Step 3: Cross multiply
   287,737,982.57x = 397,062,112.59 × 162,282,680.15
4. Step 4: Simplify right side
   287,737,982.57x = 64,436,303,815,140,944
5. Step 5: Solve for x
   x = 64,436,303,815,140,944/287,737,982.57
6. Step 6: Final answer
   x = 223,940,903.59