Finding the Fourth Proportional to 123,495.92, 170,382.12 and 78,161.84

Step by Step Solution

1. Step 1: Write the proportion equation
   123,495.92 : 170,382.12 = 78,161.84 : x
2. Step 2: Convert to fraction form
   123,495.92/170,382.12 = 78,161.84/x
3. Step 3: Cross multiply
   123,495.92x = 170,382.12 × 78,161.84
4. Step 4: Simplify right side
   123,495.92x = 13,317,380,002.30
5. Step 5: Solve for x
   x = 13,317,380,002.30/123,495.92
6. Step 6: Final answer
   x = 107,836.60