Finding the Fourth Proportional to 97.82, 146.42 and 73.31

Step by Step Solution

1. Step 1: Write the proportion equation
   97.82 : 146.42 = 73.31 : x
2. Step 2: Convert to fraction form
   97.82/146.42 = 73.31/x
3. Step 3: Cross multiply
   97.82x = 146.42 × 73.31
4. Step 4: Simplify right side
   97.82x = 10,734.05
5. Step 5: Solve for x
   x = 10,734.05/97.82
6. Step 6: Final answer
   x = 109.73