Finding the Fourth Proportional to 141,780.54, 195,665.86 and 78,118.32

Step by Step Solution

1. Step 1: Write the proportion equation
   141,780.54 : 195,665.86 = 78,118.32 : x
2. Step 2: Convert to fraction form
   141,780.54/195,665.86 = 78,118.32/x
3. Step 3: Cross multiply
   141,780.54x = 195,665.86 × 78,118.32
4. Step 4: Simplify right side
   141,780.54x = 15,285,088,264.56
5. Step 5: Solve for x
   x = 15,285,088,264.56/141,780.54
6. Step 6: Final answer
   x = 107,808.08