Finding the Fourth Proportional to 361,109.32, 541,662.66 and 108,388.72

Step by Step Solution

1. Step 1: Write the proportion equation
   361,109.32 : 541,662.66 = 108,388.72 : x
2. Step 2: Convert to fraction form
   361,109.32/541,662.66 = 108,388.72/x
3. Step 3: Cross multiply
   361,109.32x = 541,662.66 × 108,388.72
4. Step 4: Simplify right side
   361,109.32x = 58,710,120,019.42
5. Step 5: Solve for x
   x = 58,710,120,019.42/361,109.32
6. Step 6: Final answer
   x = 162,582.68