Finding the Fourth Proportional to 89,171.60, 133,718.51 and 33,728.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,171.60 : 133,718.51 = 33,728.72 : x
2. Step 2: Convert to fraction form
   89,171.60/133,718.51 = 33,728.72/x
3. Step 3: Cross multiply
   89,171.60x = 133,718.51 × 33,728.72
4. Step 4: Simplify right side
   89,171.60x = 4,510,153,345.37
5. Step 5: Solve for x
   x = 4,510,153,345.37/89,171.60
6. Step 6: Final answer
   x = 50,578.36