Finding the Fourth Proportional to 369,147.38, 509,423.72 and 199,381.50

Step by Step Solution

1. Step 1: Write the proportion equation
   369,147.38 : 509,423.72 = 199,381.50 : x
2. Step 2: Convert to fraction form
   369,147.38/509,423.72 = 199,381.50/x
3. Step 3: Cross multiply
   369,147.38x = 509,423.72 × 199,381.50
4. Step 4: Simplify right side
   369,147.38x = 101,569,665,273.41
5. Step 5: Solve for x
   x = 101,569,665,273.41/369,147.38
6. Step 6: Final answer
   x = 275,146.65