Finding the Fourth Proportional to 123,412.96, 170,182.56 and 105,567.04

Step by Step Solution

1. Step 1: Write the proportion equation
   123,412.96 : 170,182.56 = 105,567.04 : x
2. Step 2: Convert to fraction form
   123,412.96/170,182.56 = 105,567.04/x
3. Step 3: Cross multiply
   123,412.96x = 170,182.56 × 105,567.04
4. Step 4: Simplify right side
   123,412.96x = 17,965,669,118.82
5. Step 5: Solve for x
   x = 17,965,669,118.82/123,412.96
6. Step 6: Final answer
   x = 145,573.60