Finding the Fourth Proportional to 142,076.61, 196,064.75 and 78,414.41

Step by Step Solution

1. Step 1: Write the proportion equation
   142,076.61 : 196,064.75 = 78,414.41 : x
2. Step 2: Convert to fraction form
   142,076.61/196,064.75 = 78,414.41/x
3. Step 3: Cross multiply
   142,076.61x = 196,064.75 × 78,414.41
4. Step 4: Simplify right side
   142,076.61x = 15,374,302,379.25
5. Step 5: Solve for x
   x = 15,374,302,379.25/142,076.61
6. Step 6: Final answer
   x = 108,211.35