Finding the Fourth Proportional to 422,003.63, 633,061.02 and 137,594.31

Step by Step Solution

1. Step 1: Write the proportion equation
   422,003.63 : 633,061.02 = 137,594.31 : x
2. Step 2: Convert to fraction form
   422,003.63/633,061.02 = 137,594.31/x
3. Step 3: Cross multiply
   422,003.63x = 633,061.02 × 137,594.31
4. Step 4: Simplify right side
   422,003.63x = 87,105,594,234.80
5. Step 5: Solve for x
   x = 87,105,594,234.80/422,003.63
6. Step 6: Final answer
   x = 206,409.59