Finding the Fourth Proportional to 141,979.98, 195,933.15 and 78,317.76

Step by Step Solution

1. Step 1: Write the proportion equation
   141,979.98 : 195,933.15 = 78,317.76 : x
2. Step 2: Convert to fraction form
   141,979.98/195,933.15 = 78,317.76/x
3. Step 3: Cross multiply
   141,979.98x = 195,933.15 × 78,317.76
4. Step 4: Simplify right side
   141,979.98x = 15,345,045,417.74
5. Step 5: Solve for x
   x = 15,345,045,417.74/141,979.98
6. Step 6: Final answer
   x = 108,078.94