Finding the Fourth Proportional to 142.09, 213.18 and 59.82

Step by Step Solution

1. Step 1: Write the proportion equation
   142.09 : 213.18 = 59.82 : x
2. Step 2: Convert to fraction form
   142.09/213.18 = 59.82/x
3. Step 3: Cross multiply
   142.09x = 213.18 × 59.82
4. Step 4: Simplify right side
   142.09x = 12,753.12
5. Step 5: Solve for x
   x = 12,753.12/142.09
6. Step 6: Final answer
   x = 89.75