Finding the Fourth Proportional to 663,614.50, 995,425.40 and 164,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   663,614.50 : 995,425.40 = 164,978.50 : x
2. Step 2: Convert to fraction form
   663,614.50/995,425.40 = 164,978.50/x
3. Step 3: Cross multiply
   663,614.50x = 995,425.40 × 164,978.50
4. Step 4: Simplify right side
   663,614.50x = 164,223,789,353.90
5. Step 5: Solve for x
   x = 164,223,789,353.90/663,614.50
6. Step 6: Final answer
   x = 247,468.66