Finding the Fourth Proportional to 165,288.04, 228,099 and 89,836.72

Step by Step Solution

1. Step 1: Write the proportion equation
   165,288.04 : 228,099 = 89,836.72 : x
2. Step 2: Convert to fraction form
   165,288.04/228,099 = 89,836.72/x
3. Step 3: Cross multiply
   165,288.04x = 228,099 × 89,836.72
4. Step 4: Simplify right side
   165,288.04x = 20,491,665,995.28
5. Step 5: Solve for x
   x = 20,491,665,995.28/165,288.04
6. Step 6: Final answer
   x = 123,975.49