Finding the Fourth Proportional to 142.05, 196.03 and 100.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142.05 : 196.03 = 100.10 : x
2. Step 2: Convert to fraction form
   142.05/196.03 = 100.10/x
3. Step 3: Cross multiply
   142.05x = 196.03 × 100.10
4. Step 4: Simplify right side
   142.05x = 19,621.12
5. Step 5: Solve for x
   x = 19,621.12/142.05
6. Step 6: Final answer
   x = 138.13