Finding the Fourth Proportional to 309,464.69, 427,062.35 and 194,819.18

Step by Step Solution

1. Step 1: Write the proportion equation
   309,464.69 : 427,062.35 = 194,819.18 : x
2. Step 2: Convert to fraction form
   309,464.69/427,062.35 = 194,819.18/x
3. Step 3: Cross multiply
   309,464.69x = 427,062.35 × 194,819.18
4. Step 4: Simplify right side
   309,464.69x = 83,199,935,187.61
5. Step 5: Solve for x
   x = 83,199,935,187.61/309,464.69
6. Step 6: Final answer
   x = 268,851.15