Finding the Fourth Proportional to 424,475.34, 636,791.76 and 140,185.59

Step by Step Solution

1. Step 1: Write the proportion equation
   424,475.34 : 636,791.76 = 140,185.59 : x
2. Step 2: Convert to fraction form
   424,475.34/636,791.76 = 140,185.59/x
3. Step 3: Cross multiply
   424,475.34x = 636,791.76 × 140,185.59
4. Step 4: Simplify right side
   424,475.34x = 89,269,028,582.74
5. Step 5: Solve for x
   x = 89,269,028,582.74/424,475.34
6. Step 6: Final answer
   x = 210,304.39