Finding the Fourth Proportional to 51,172.40, 76,645.59 and 33,428.54

Step by Step Solution

1. Step 1: Write the proportion equation
   51,172.40 : 76,645.59 = 33,428.54 : x
2. Step 2: Convert to fraction form
   51,172.40/76,645.59 = 33,428.54/x
3. Step 3: Cross multiply
   51,172.40x = 76,645.59 × 33,428.54
4. Step 4: Simplify right side
   51,172.40x = 2,562,150,171.14
5. Step 5: Solve for x
   x = 2,562,150,171.14/51,172.40
6. Step 6: Final answer
   x = 50,068.99