Finding the Fourth Proportional to 123,059.28, 169,822.50 and 69,345.12

Step by Step Solution

1. Step 1: Write the proportion equation
   123,059.28 : 169,822.50 = 69,345.12 : x
2. Step 2: Convert to fraction form
   123,059.28/169,822.50 = 69,345.12/x
3. Step 3: Cross multiply
   123,059.28x = 169,822.50 × 69,345.12
4. Step 4: Simplify right side
   123,059.28x = 11,776,361,641.20
5. Step 5: Solve for x
   x = 11,776,361,641.20/123,059.28
6. Step 6: Final answer
   x = 95,696.66