Finding the Fourth Proportional to 141,868.98, 195,780.55 and 78,209.05

Step by Step Solution

1. Step 1: Write the proportion equation
   141,868.98 : 195,780.55 = 78,209.05 : x
2. Step 2: Convert to fraction form
   141,868.98/195,780.55 = 78,209.05/x
3. Step 3: Cross multiply
   141,868.98x = 195,780.55 × 78,209.05
4. Step 4: Simplify right side
   141,868.98x = 15,311,810,823.98
5. Step 5: Solve for x
   x = 15,311,810,823.98/141,868.98
6. Step 6: Final answer
   x = 107,929.24