Finding the Fourth Proportional to 123,192.99, 170,005.50 and 69,478.47

Step by Step Solution

1. Step 1: Write the proportion equation
   123,192.99 : 170,005.50 = 69,478.47 : x
2. Step 2: Convert to fraction form
   123,192.99/170,005.50 = 69,478.47/x
3. Step 3: Cross multiply
   123,192.99x = 170,005.50 × 69,478.47
4. Step 4: Simplify right side
   123,192.99x = 11,811,722,031.59
5. Step 5: Solve for x
   x = 11,811,722,031.59/123,192.99
6. Step 6: Final answer
   x = 95,879.82