Finding the Fourth Proportional to 394,976.58, 545,132.89 and 242,099.82

Step by Step Solution

1. Step 1: Write the proportion equation
   394,976.58 : 545,132.89 = 242,099.82 : x
2. Step 2: Convert to fraction form
   394,976.58/545,132.89 = 242,099.82/x
3. Step 3: Cross multiply
   394,976.58x = 545,132.89 × 242,099.82
4. Step 4: Simplify right side
   394,976.58x = 131,976,570,608.92
5. Step 5: Solve for x
   x = 131,976,570,608.92/394,976.58
6. Step 6: Final answer
   x = 334,137.71