Finding the Fourth Proportional to 320,460.89, 480,690.72 and 120,826.06

Step by Step Solution

1. Step 1: Write the proportion equation
   320,460.89 : 480,690.72 = 120,826.06 : x
2. Step 2: Convert to fraction form
   320,460.89/480,690.72 = 120,826.06/x
3. Step 3: Cross multiply
   320,460.89x = 480,690.72 × 120,826.06
4. Step 4: Simplify right side
   320,460.89x = 58,079,964,574.44
5. Step 5: Solve for x
   x = 58,079,964,574.44/320,460.89
6. Step 6: Final answer
   x = 181,238.86