Finding the Fourth Proportional to 123,491.82, 170,426.55 and 75,738.66

Step by Step Solution

1. Step 1: Write the proportion equation
   123,491.82 : 170,426.55 = 75,738.66 : x
2. Step 2: Convert to fraction form
   123,491.82/170,426.55 = 75,738.66/x
3. Step 3: Cross multiply
   123,491.82x = 170,426.55 × 75,738.66
4. Step 4: Simplify right side
   123,491.82x = 12,907,878,525.42
5. Step 5: Solve for x
   x = 12,907,878,525.42/123,491.82
6. Step 6: Final answer
   x = 104,524.16