Finding the Fourth Proportional to 361,111.32, 541,665.66 and 108,390.72

Step by Step Solution

1. Step 1: Write the proportion equation
   361,111.32 : 541,665.66 = 108,390.72 : x
2. Step 2: Convert to fraction form
   361,111.32/541,665.66 = 108,390.72/x
3. Step 3: Cross multiply
   361,111.32x = 541,665.66 × 108,390.72
4. Step 4: Simplify right side
   361,111.32x = 58,711,530,886.68
5. Step 5: Solve for x
   x = 58,711,530,886.68/361,111.32
6. Step 6: Final answer
   x = 162,585.68