Finding the Fourth Proportional to 216,578.61, 298,882.71 and 119,796.57

Step by Step Solution

1. Step 1: Write the proportion equation
   216,578.61 : 298,882.71 = 119,796.57 : x
2. Step 2: Convert to fraction form
   216,578.61/298,882.71 = 119,796.57/x
3. Step 3: Cross multiply
   216,578.61x = 298,882.71 × 119,796.57
4. Step 4: Simplify right side
   216,578.61x = 35,805,123,490.30
5. Step 5: Solve for x
   x = 35,805,123,490.30/216,578.61
6. Step 6: Final answer
   x = 165,321.61