Finding the Fourth Proportional to 374,128.78, 516,300.45 and 204,362.86

Step by Step Solution

1. Step 1: Write the proportion equation
   374,128.78 : 516,300.45 = 204,362.86 : x
2. Step 2: Convert to fraction form
   374,128.78/516,300.45 = 204,362.86/x
3. Step 3: Cross multiply
   374,128.78x = 516,300.45 × 204,362.86
4. Step 4: Simplify right side
   374,128.78x = 105,512,636,581.29
5. Step 5: Solve for x
   x = 105,512,636,581.29/374,128.78
6. Step 6: Final answer
   x = 282,022.24