Finding the Fourth Proportional to 356,682.01, 491,790.76 and 308,196.31

Step by Step Solution

1. Step 1: Write the proportion equation
   356,682.01 : 491,790.76 = 308,196.31 : x
2. Step 2: Convert to fraction form
   356,682.01/491,790.76 = 308,196.31/x
3. Step 3: Cross multiply
   356,682.01x = 491,790.76 × 308,196.31
4. Step 4: Simplify right side
   356,682.01x = 151,568,099,101.95
5. Step 5: Solve for x
   x = 151,568,099,101.95/356,682.01
6. Step 6: Final answer
   x = 424,939.01