Finding the Fourth Proportional to 141,822.78, 195,724.46 and 78,166.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,822.78 : 195,724.46 = 78,166.50 : x
2. Step 2: Convert to fraction form
   141,822.78/195,724.46 = 78,166.50/x
3. Step 3: Cross multiply
   141,822.78x = 195,724.46 × 78,166.50
4. Step 4: Simplify right side
   141,822.78x = 15,299,096,002.59
5. Step 5: Solve for x
   x = 15,299,096,002.59/141,822.78
6. Step 6: Final answer
   x = 107,874.74