Finding the Fourth Proportional to 97.37, 145.89 and 74.56

Step by Step Solution

1. Step 1: Write the proportion equation
   97.37 : 145.89 = 74.56 : x
2. Step 2: Convert to fraction form
   97.37/145.89 = 74.56/x
3. Step 3: Cross multiply
   97.37x = 145.89 × 74.56
4. Step 4: Simplify right side
   97.37x = 10,877.56
5. Step 5: Solve for x
   x = 10,877.56/97.37
6. Step 6: Final answer
   x = 111.71