Finding the Fourth Proportional to 123,496.38, 170,428.41 and 69,780.33

Step by Step Solution

1. Step 1: Write the proportion equation
   123,496.38 : 170,428.41 = 69,780.33 : x
2. Step 2: Convert to fraction form
   123,496.38/170,428.41 = 69,780.33/x
3. Step 3: Cross multiply
   123,496.38x = 170,428.41 × 69,780.33
4. Step 4: Simplify right side
   123,496.38x = 11,892,550,691.18
5. Step 5: Solve for x
   x = 11,892,550,691.18/123,496.38
6. Step 6: Final answer
   x = 96,298.78