Finding the Fourth Proportional to 442,598.56, 662,776.72 and 274,447.31

Step by Step Solution

1. Step 1: Write the proportion equation
   442,598.56 : 662,776.72 = 274,447.31 : x
2. Step 2: Convert to fraction form
   442,598.56/662,776.72 = 274,447.31/x
3. Step 3: Cross multiply
   442,598.56x = 662,776.72 × 274,447.31
4. Step 4: Simplify right side
   442,598.56x = 181,897,287,934.62
5. Step 5: Solve for x
   x = 181,897,287,934.62/442,598.56
6. Step 6: Final answer
   x = 410,975.78