Finding the Fourth Proportional to 309,450, 427,180.89 and 194,897

Step by Step Solution

1. Step 1: Write the proportion equation
   309,450 : 427,180.89 = 194,897 : x
2. Step 2: Convert to fraction form
   309,450/427,180.89 = 194,897/x
3. Step 3: Cross multiply
   309,450x = 427,180.89 × 194,897
4. Step 4: Simplify right side
   309,450x = 83,256,273,918.33
5. Step 5: Solve for x
   x = 83,256,273,918.33/309,450
6. Step 6: Final answer
   x = 269,045.97