Finding the Fourth Proportional to 423,789.72, 635,683.98 and 108,246.72

Step by Step Solution

1. Step 1: Write the proportion equation
   423,789.72 : 635,683.98 = 108,246.72 : x
2. Step 2: Convert to fraction form
   423,789.72/635,683.98 = 108,246.72/x
3. Step 3: Cross multiply
   423,789.72x = 635,683.98 × 108,246.72
4. Step 4: Simplify right side
   423,789.72x = 68,810,705,791.55
5. Step 5: Solve for x
   x = 68,810,705,791.55/423,789.72
6. Step 6: Final answer
   x = 162,369.93