Finding the Fourth Proportional to 142,077.41, 196,066.42 and 78,414.75

Step by Step Solution

1. Step 1: Write the proportion equation
   142,077.41 : 196,066.42 = 78,414.75 : x
2. Step 2: Convert to fraction form
   142,077.41/196,066.42 = 78,414.75/x
3. Step 3: Cross multiply
   142,077.41x = 196,066.42 × 78,414.75
4. Step 4: Simplify right side
   142,077.41x = 15,374,499,405.71
5. Step 5: Solve for x
   x = 15,374,499,405.71/142,077.41
6. Step 6: Final answer
   x = 108,212.13