Finding the Fourth Proportional to 142,077.29, 196,066.25 and 78,414.63

Step by Step Solution

1. Step 1: Write the proportion equation
   142,077.29 : 196,066.25 = 78,414.63 : x
2. Step 2: Convert to fraction form
   142,077.29/196,066.25 = 78,414.63/x
3. Step 3: Cross multiply
   142,077.29x = 196,066.25 × 78,414.63
4. Step 4: Simplify right side
   142,077.29x = 15,374,461,272.87
5. Step 5: Solve for x
   x = 15,374,461,272.87/142,077.29
6. Step 6: Final answer
   x = 108,211.96