Finding the Fourth Proportional to 123,496.92, 170,383.50 and 78,162.84

Step by Step Solution

1. Step 1: Write the proportion equation
   123,496.92 : 170,383.50 = 78,162.84 : x
2. Step 2: Convert to fraction form
   123,496.92/170,383.50 = 78,162.84/x
3. Step 3: Cross multiply
   123,496.92x = 170,383.50 × 78,162.84
4. Step 4: Simplify right side
   123,496.92x = 13,317,658,249.14
5. Step 5: Solve for x
   x = 13,317,658,249.14/123,496.92
6. Step 6: Final answer
   x = 107,837.98