Finding the Fourth Proportional to 593,131.96, 818,522.54 and 321,200.15

Step by Step Solution

1. Step 1: Write the proportion equation
   593,131.96 : 818,522.54 = 321,200.15 : x
2. Step 2: Convert to fraction form
   593,131.96/818,522.54 = 321,200.15/x
3. Step 3: Cross multiply
   593,131.96x = 818,522.54 × 321,200.15
4. Step 4: Simplify right side
   593,131.96x = 262,909,563,639.83
5. Step 5: Solve for x
   x = 262,909,563,639.83/593,131.96
6. Step 6: Final answer
   x = 443,256.45