Finding the Fourth Proportional to 298,196.76, 447,141.92 and 87,807.36

Step by Step Solution

1. Step 1: Write the proportion equation
   298,196.76 : 447,141.92 = 87,807.36 : x
2. Step 2: Convert to fraction form
   298,196.76/447,141.92 = 87,807.36/x
3. Step 3: Cross multiply
   298,196.76x = 447,141.92 × 87,807.36
4. Step 4: Simplify right side
   298,196.76x = 39,262,351,540.53
5. Step 5: Solve for x
   x = 39,262,351,540.53/298,196.76
6. Step 6: Final answer
   x = 131,665.92