Finding the Fourth Proportional to 495,978.81, 744,178.83 and 271,076.49

Step by Step Solution

1. Step 1: Write the proportion equation
   495,978.81 : 744,178.83 = 271,076.49 : x
2. Step 2: Convert to fraction form
   495,978.81/744,178.83 = 271,076.49/x
3. Step 3: Cross multiply
   495,978.81x = 744,178.83 × 271,076.49
4. Step 4: Simplify right side
   495,978.81x = 201,729,385,168.71
5. Step 5: Solve for x
   x = 201,729,385,168.71/495,978.81
6. Step 6: Final answer
   x = 406,729.85