Finding the Fourth Proportional to 142.58, 196.58 and 93.37

Step by Step Solution

1. Step 1: Write the proportion equation
   142.58 : 196.58 = 93.37 : x
2. Step 2: Convert to fraction form
   142.58/196.58 = 93.37/x
3. Step 3: Cross multiply
   142.58x = 196.58 × 93.37
4. Step 4: Simplify right side
   142.58x = 18,355.15
5. Step 5: Solve for x
   x = 18,355.15/142.58
6. Step 6: Final answer
   x = 128.74