Finding the Fourth Proportional to 123,417.10, 170,082.21 and 89,367.94

Step by Step Solution

1. Step 1: Write the proportion equation
   123,417.10 : 170,082.21 = 89,367.94 : x
2. Step 2: Convert to fraction form
   123,417.10/170,082.21 = 89,367.94/x
3. Step 3: Cross multiply
   123,417.10x = 170,082.21 × 89,367.94
4. Step 4: Simplify right side
   123,417.10x = 15,199,896,738.35
5. Step 5: Solve for x
   x = 15,199,896,738.35/123,417.10
6. Step 6: Final answer
   x = 123,158.76