Finding the Fourth Proportional to 298,978.46, 412,593.50 and 163,011.31

Step by Step Solution

1. Step 1: Write the proportion equation
   298,978.46 : 412,593.50 = 163,011.31 : x
2. Step 2: Convert to fraction form
   298,978.46/412,593.50 = 163,011.31/x
3. Step 3: Cross multiply
   298,978.46x = 412,593.50 × 163,011.31
4. Step 4: Simplify right side
   298,978.46x = 67,257,404,054.46
5. Step 5: Solve for x
   x = 67,257,404,054.46/298,978.46
6. Step 6: Final answer
   x = 224,957.36