Finding the Fourth Proportional to 53.31, 73.25 and 42.37

Step by Step Solution

1. Step 1: Write the proportion equation
   53.31 : 73.25 = 42.37 : x
2. Step 2: Convert to fraction form
   53.31/73.25 = 42.37/x
3. Step 3: Cross multiply
   53.31x = 73.25 × 42.37
4. Step 4: Simplify right side
   53.31x = 3,103.82
5. Step 5: Solve for x
   x = 3,103.82/53.31
6. Step 6: Final answer
   x = 58.22