Finding the Fourth Proportional to 73.31, 101.17 and 42.23

Step by Step Solution

1. Step 1: Write the proportion equation
   73.31 : 101.17 = 42.23 : x
2. Step 2: Convert to fraction form
   73.31/101.17 = 42.23/x
3. Step 3: Cross multiply
   73.31x = 101.17 × 42.23
4. Step 4: Simplify right side
   73.31x = 4,272.15
5. Step 5: Solve for x
   x = 4,272.15/73.31
6. Step 6: Final answer
   x = 58.27