Finding the Fourth Proportional to 145.89, 201.38 and 116.28

Step by Step Solution

1. Step 1: Write the proportion equation
   145.89 : 201.38 = 116.28 : x
2. Step 2: Convert to fraction form
   145.89/201.38 = 116.28/x
3. Step 3: Cross multiply
   145.89x = 201.38 × 116.28
4. Step 4: Simplify right side
   145.89x = 23,415.89
5. Step 5: Solve for x
   x = 23,415.89/145.89
6. Step 6: Final answer
   x = 160.50