Finding the Fourth Proportional to 80,172.51, 120,239.33 and 33,399.87

Step by Step Solution

1. Step 1: Write the proportion equation
   80,172.51 : 120,239.33 = 33,399.87 : x
2. Step 2: Convert to fraction form
   80,172.51/120,239.33 = 33,399.87/x
3. Step 3: Cross multiply
   80,172.51x = 120,239.33 × 33,399.87
4. Step 4: Simplify right side
   80,172.51x = 4,015,977,823.89
5. Step 5: Solve for x
   x = 4,015,977,823.89/80,172.51
6. Step 6: Final answer
   x = 50,091.71