Finding the Fourth Proportional to 71.42, 98.58 and 42.32

Step by Step Solution

1. Step 1: Write the proportion equation
   71.42 : 98.58 = 42.32 : x
2. Step 2: Convert to fraction form
   71.42/98.58 = 42.32/x
3. Step 3: Cross multiply
   71.42x = 98.58 × 42.32
4. Step 4: Simplify right side
   71.42x = 4,171.91
5. Step 5: Solve for x
   x = 4,171.91/71.42
6. Step 6: Final answer
   x = 58.41