Finding the Fourth Proportional to 142,078.51, 196,067.01 and 78,414.94

Step by Step Solution

1. Step 1: Write the proportion equation
   142,078.51 : 196,067.01 = 78,414.94 : x
2. Step 2: Convert to fraction form
   142,078.51/196,067.01 = 78,414.94/x
3. Step 3: Cross multiply
   142,078.51x = 196,067.01 × 78,414.94
4. Step 4: Simplify right side
   142,078.51x = 15,374,582,825.13
5. Step 5: Solve for x
   x = 15,374,582,825.13/142,078.51
6. Step 6: Final answer
   x = 108,211.88