Finding the Fourth Proportional to 610,468.38, 842,499.63 and 355,814.10

Step by Step Solution

1. Step 1: Write the proportion equation
   610,468.38 : 842,499.63 = 355,814.10 : x
2. Step 2: Convert to fraction form
   610,468.38/842,499.63 = 355,814.10/x
3. Step 3: Cross multiply
   610,468.38x = 842,499.63 × 355,814.10
4. Step 4: Simplify right side
   610,468.38x = 299,773,247,598.78
5. Step 5: Solve for x
   x = 299,773,247,598.78/610,468.38
6. Step 6: Final answer
   x = 491,054.50