Finding the Fourth Proportional to 339,483.88, 509,217.18 and 162,116.20

Step by Step Solution

1. Step 1: Write the proportion equation
   339,483.88 : 509,217.18 = 162,116.20 : x
2. Step 2: Convert to fraction form
   339,483.88/509,217.18 = 162,116.20/x
3. Step 3: Cross multiply
   339,483.88x = 509,217.18 × 162,116.20
4. Step 4: Simplify right side
   339,483.88x = 82,552,354,196.32
5. Step 5: Solve for x
   x = 82,552,354,196.32/339,483.88
6. Step 6: Final answer
   x = 243,170.17