Finding the Fourth Proportional to 119,078.46, 164,336.58 and 78,722.10

Step by Step Solution

1. Step 1: Write the proportion equation
   119,078.46 : 164,336.58 = 78,722.10 : x
2. Step 2: Convert to fraction form
   119,078.46/164,336.58 = 78,722.10/x
3. Step 3: Cross multiply
   119,078.46x = 164,336.58 × 78,722.10
4. Step 4: Simplify right side
   119,078.46x = 12,936,920,684.42
5. Step 5: Solve for x
   x = 12,936,920,684.42/119,078.46
6. Step 6: Final answer
   x = 108,641.99