Finding the Fourth Proportional to 141,982.50, 195,920.72 and 78,320.30

Step by Step Solution

1. Step 1: Write the proportion equation
   141,982.50 : 195,920.72 = 78,320.30 : x
2. Step 2: Convert to fraction form
   141,982.50/195,920.72 = 78,320.30/x
3. Step 3: Cross multiply
   141,982.50x = 195,920.72 × 78,320.30
4. Step 4: Simplify right side
   141,982.50x = 15,344,569,566.62
5. Step 5: Solve for x
   x = 15,344,569,566.62/141,982.50
6. Step 6: Final answer
   x = 108,073.67