Finding the Fourth Proportional to 142,076.66, 196,064.82 and 78,414.46

Step by Step Solution

1. Step 1: Write the proportion equation
   142,076.66 : 196,064.82 = 78,414.46 : x
2. Step 2: Convert to fraction form
   142,076.66/196,064.82 = 78,414.46/x
3. Step 3: Cross multiply
   142,076.66x = 196,064.82 × 78,414.46
4. Step 4: Simplify right side
   142,076.66x = 15,374,316,985.30
5. Step 5: Solve for x
   x = 15,374,316,985.30/142,076.66
6. Step 6: Final answer
   x = 108,211.42