Finding the Fourth Proportional to 127,018.68, 190,357.39 and 89,273.49

Step by Step Solution

1. Step 1: Write the proportion equation
   127,018.68 : 190,357.39 = 89,273.49 : x
2. Step 2: Convert to fraction form
   127,018.68/190,357.39 = 89,273.49/x
3. Step 3: Cross multiply
   127,018.68x = 190,357.39 × 89,273.49
4. Step 4: Simplify right side
   127,018.68x = 16,993,869,021.10
5. Step 5: Solve for x
   x = 16,993,869,021.10/127,018.68
6. Step 6: Final answer
   x = 133,790.31