Finding the Fourth Proportional to 321,056.28, 443,056.56 and 185,089.59

Step by Step Solution

1. Step 1: Write the proportion equation
   321,056.28 : 443,056.56 = 185,089.59 : x
2. Step 2: Convert to fraction form
   321,056.28/443,056.56 = 185,089.59/x
3. Step 3: Cross multiply
   321,056.28x = 443,056.56 × 185,089.59
4. Step 4: Simplify right side
   321,056.28x = 82,005,157,037.21
5. Step 5: Solve for x
   x = 82,005,157,037.21/321,056.28
6. Step 6: Final answer
   x = 255,423.00