Finding the Fourth Proportional to 323,622.09, 485,432.72 and 86,964.77

Step by Step Solution

1. Step 1: Write the proportion equation
   323,622.09 : 485,432.72 = 86,964.77 : x
2. Step 2: Convert to fraction form
   323,622.09/485,432.72 = 86,964.77/x
3. Step 3: Cross multiply
   323,622.09x = 485,432.72 × 86,964.77
4. Step 4: Simplify right side
   323,622.09x = 42,215,544,410.45
5. Step 5: Solve for x
   x = 42,215,544,410.45/323,622.09
6. Step 6: Final answer
   x = 130,447.04