Finding the Fourth Proportional to 97.29, 145.89 and 28.79

Step by Step Solution

1. Step 1: Write the proportion equation
   97.29 : 145.89 = 28.79 : x
2. Step 2: Convert to fraction form
   97.29/145.89 = 28.79/x
3. Step 3: Cross multiply
   97.29x = 145.89 × 28.79
4. Step 4: Simplify right side
   97.29x = 4,200.17
5. Step 5: Solve for x
   x = 4,200.17/97.29
6. Step 6: Final answer
   x = 43.17