Finding the Fourth Proportional to 309,912.71, 465,118.14 and 160,196.86

Step by Step Solution

1. Step 1: Write the proportion equation
   309,912.71 : 465,118.14 = 160,196.86 : x
2. Step 2: Convert to fraction form
   309,912.71/465,118.14 = 160,196.86/x
3. Step 3: Cross multiply
   309,912.71x = 465,118.14 × 160,196.86
4. Step 4: Simplify right side
   309,912.71x = 74,510,465,557.04
5. Step 5: Solve for x
   x = 74,510,465,557.04/309,912.71
6. Step 6: Final answer
   x = 240,424.04