Finding the Fourth Proportional to 321,120.84, 443,141.20 and 177,877.86

Step by Step Solution

1. Step 1: Write the proportion equation
   321,120.84 : 443,141.20 = 177,877.86 : x
2. Step 2: Convert to fraction form
   321,120.84/443,141.20 = 177,877.86/x
3. Step 3: Cross multiply
   321,120.84x = 443,141.20 × 177,877.86
4. Step 4: Simplify right side
   321,120.84x = 78,825,008,333.83
5. Step 5: Solve for x
   x = 78,825,008,333.83/321,120.84
6. Step 6: Final answer
   x = 245,468.37