Finding the Fourth Proportional to 123,695.76, 170,700.18 and 69,979.62

Step by Step Solution

1. Step 1: Write the proportion equation
   123,695.76 : 170,700.18 = 69,979.62 : x
2. Step 2: Convert to fraction form
   123,695.76/170,700.18 = 69,979.62/x
3. Step 3: Cross multiply
   123,695.76x = 170,700.18 × 69,979.62
4. Step 4: Simplify right side
   123,695.76x = 11,945,533,730.33
5. Step 5: Solve for x
   x = 11,945,533,730.33/123,695.76
6. Step 6: Final answer
   x = 96,571.89