Finding the Fourth Proportional to 518,456.53, 777,684.89 and 163,498.33

Step by Step Solution

1. Step 1: Write the proportion equation
   518,456.53 : 777,684.89 = 163,498.33 : x
2. Step 2: Convert to fraction form
   518,456.53/777,684.89 = 163,498.33/x
3. Step 3: Cross multiply
   518,456.53x = 777,684.89 × 163,498.33
4. Step 4: Simplify right side
   518,456.53x = 127,150,179,245.77
5. Step 5: Solve for x
   x = 127,150,179,245.77/518,456.53
6. Step 6: Final answer
   x = 245,247.52