Finding the Fourth Proportional to 422,076.87, 582,443.01 and 231,053.31

Step by Step Solution

1. Step 1: Write the proportion equation
   422,076.87 : 582,443.01 = 231,053.31 : x
2. Step 2: Convert to fraction form
   422,076.87/582,443.01 = 231,053.31/x
3. Step 3: Cross multiply
   422,076.87x = 582,443.01 × 231,053.31
4. Step 4: Simplify right side
   422,076.87x = 134,575,385,346.86
5. Step 5: Solve for x
   x = 134,575,385,346.86/422,076.87
6. Step 6: Final answer
   x = 318,840.94