Finding the Fourth Proportional to 120,016.32, 180,024.56 and 31,269.60

Step by Step Solution

1. Step 1: Write the proportion equation
   120,016.32 : 180,024.56 = 31,269.60 : x
2. Step 2: Convert to fraction form
   120,016.32/180,024.56 = 31,269.60/x
3. Step 3: Cross multiply
   120,016.32x = 180,024.56 × 31,269.60
4. Step 4: Simplify right side
   120,016.32x = 5,629,295,981.38
5. Step 5: Solve for x
   x = 5,629,295,981.38/120,016.32
6. Step 6: Final answer
   x = 46,904.42