Finding the Fourth Proportional to 142,832.82, 197,111.27 and 78,308.12

Step by Step Solution

1. Step 1: Write the proportion equation
   142,832.82 : 197,111.27 = 78,308.12 : x
2. Step 2: Convert to fraction form
   142,832.82/197,111.27 = 78,308.12/x
3. Step 3: Cross multiply
   142,832.82x = 197,111.27 × 78,308.12
4. Step 4: Simplify right side
   142,832.82x = 15,435,412,984.51
5. Step 5: Solve for x
   x = 15,435,412,984.51/142,832.82
6. Step 6: Final answer
   x = 108,066.29