Finding the Fourth Proportional to 321,042.72, 443,045.04 and 192,113.76

Step by Step Solution

1. Step 1: Write the proportion equation
   321,042.72 : 443,045.04 = 192,113.76 : x
2. Step 2: Convert to fraction form
   321,042.72/443,045.04 = 192,113.76/x
3. Step 3: Cross multiply
   321,042.72x = 443,045.04 × 192,113.76
4. Step 4: Simplify right side
   321,042.72x = 85,115,048,483.75
5. Step 5: Solve for x
   x = 85,115,048,483.75/321,042.72
6. Step 6: Final answer
   x = 265,120.63