Finding the Fourth Proportional to 361,112.32, 541,667.16 and 108,391.72

Step by Step Solution

1. Step 1: Write the proportion equation
   361,112.32 : 541,667.16 = 108,391.72 : x
2. Step 2: Convert to fraction form
   361,112.32/541,667.16 = 108,391.72/x
3. Step 3: Cross multiply
   361,112.32x = 541,667.16 × 108,391.72
4. Step 4: Simplify right side
   361,112.32x = 58,712,235,139.92
5. Step 5: Solve for x
   x = 58,712,235,139.92/361,112.32
6. Step 6: Final answer
   x = 162,587.18