Finding the Fourth Proportional to 593,156.47, 818,554.69 and 321,223.53

Step by Step Solution

1. Step 1: Write the proportion equation
   593,156.47 : 818,554.69 = 321,223.53 : x
2. Step 2: Convert to fraction form
   593,156.47/818,554.69 = 321,223.53/x
3. Step 3: Cross multiply
   593,156.47x = 818,554.69 × 321,223.53
4. Step 4: Simplify right side
   593,156.47x = 262,939,027,019.86
5. Step 5: Solve for x
   x = 262,939,027,019.86/593,156.47
6. Step 6: Final answer
   x = 443,287.80