Finding the Fourth Proportional to 321,588.28, 482,401.32 and 108,338.50

Step by Step Solution

1. Step 1: Write the proportion equation
   321,588.28 : 482,401.32 = 108,338.50 : x
2. Step 2: Convert to fraction form
   321,588.28/482,401.32 = 108,338.50/x
3. Step 3: Cross multiply
   321,588.28x = 482,401.32 × 108,338.50
4. Step 4: Simplify right side
   321,588.28x = 52,262,635,406.82
5. Step 5: Solve for x
   x = 52,262,635,406.82/321,588.28
6. Step 6: Final answer
   x = 162,514.12