Finding the Fourth Proportional to 485,959.34, 670,621.83 and 271,099.59

Step by Step Solution

1. Step 1: Write the proportion equation
   485,959.34 : 670,621.83 = 271,099.59 : x
2. Step 2: Convert to fraction form
   485,959.34/670,621.83 = 271,099.59/x
3. Step 3: Cross multiply
   485,959.34x = 670,621.83 × 271,099.59
4. Step 4: Simplify right side
   485,959.34x = 181,805,303,158.05
5. Step 5: Solve for x
   x = 181,805,303,158.05/485,959.34
6. Step 6: Final answer
   x = 374,116.29