Finding the Fourth Proportional to 360,685.50, 497,769.03 and 201,709.50

Step by Step Solution

1. Step 1: Write the proportion equation
   360,685.50 : 497,769.03 = 201,709.50 : x
2. Step 2: Convert to fraction form
   360,685.50/497,769.03 = 201,709.50/x
3. Step 3: Cross multiply
   360,685.50x = 497,769.03 × 201,709.50
4. Step 4: Simplify right side
   360,685.50x = 100,404,742,156.79
5. Step 5: Solve for x
   x = 100,404,742,156.79/360,685.50
6. Step 6: Final answer
   x = 278,371.99