Finding the Fourth Proportional to 321,466.40, 443,533.82 and 253,271.69

Step by Step Solution

1. Step 1: Write the proportion equation
   321,466.40 : 443,533.82 = 253,271.69 : x
2. Step 2: Convert to fraction form
   321,466.40/443,533.82 = 253,271.69/x
3. Step 3: Cross multiply
   321,466.40x = 443,533.82 × 253,271.69
4. Step 4: Simplify right side
   321,466.40x = 112,334,556,679.53
5. Step 5: Solve for x
   x = 112,334,556,679.53/321,466.40
6. Step 6: Final answer
   x = 349,444.17