Finding the Fourth Proportional to 298,012.57, 447,018.82 and 87,650.53

Step by Step Solution

1. Step 1: Write the proportion equation
   298,012.57 : 447,018.82 = 87,650.53 : x
2. Step 2: Convert to fraction form
   298,012.57/447,018.82 = 87,650.53/x
3. Step 3: Cross multiply
   298,012.57x = 447,018.82 × 87,650.53
4. Step 4: Simplify right side
   298,012.57x = 39,181,436,054.72
5. Step 5: Solve for x
   x = 39,181,436,054.72/298,012.57
6. Step 6: Final answer
   x = 131,475.78