Finding the Fourth Proportional to 142,181.36, 196,210.12 and 78,519

Step by Step Solution

1. Step 1: Write the proportion equation
   142,181.36 : 196,210.12 = 78,519 : x
2. Step 2: Convert to fraction form
   142,181.36/196,210.12 = 78,519/x
3. Step 3: Cross multiply
   142,181.36x = 196,210.12 × 78,519
4. Step 4: Simplify right side
   142,181.36x = 15,406,222,412.28
5. Step 5: Solve for x
   x = 15,406,222,412.28/142,181.36
6. Step 6: Final answer
   x = 108,356.13