Finding the Fourth Proportional to 407,732.18, 611,550.72 and 108,236.03

Step by Step Solution

1. Step 1: Write the proportion equation
   407,732.18 : 611,550.72 = 108,236.03 : x
2. Step 2: Convert to fraction form
   407,732.18/611,550.72 = 108,236.03/x
3. Step 3: Cross multiply
   407,732.18x = 611,550.72 × 108,236.03
4. Step 4: Simplify right side
   407,732.18x = 66,191,819,018.69
5. Step 5: Solve for x
   x = 66,191,819,018.69/407,732.18
6. Step 6: Final answer
   x = 162,341.42