Finding the Fourth Proportional to 108,087.86, 162,377.82 and 78,194.30

Step by Step Solution

1. Step 1: Write the proportion equation
   108,087.86 : 162,377.82 = 78,194.30 : x
2. Step 2: Convert to fraction form
   108,087.86/162,377.82 = 78,194.30/x
3. Step 3: Cross multiply
   108,087.86x = 162,377.82 × 78,194.30
4. Step 4: Simplify right side
   108,087.86x = 12,697,019,579.45
5. Step 5: Solve for x
   x = 12,697,019,579.45/108,087.86
6. Step 6: Final answer
   x = 117,469.44