Finding the Fourth Proportional to 123,416.10, 170,080.83 and 89,366.94

Step by Step Solution

1. Step 1: Write the proportion equation
   123,416.10 : 170,080.83 = 89,366.94 : x
2. Step 2: Convert to fraction form
   123,416.10/170,080.83 = 89,366.94/x
3. Step 3: Cross multiply
   123,416.10x = 170,080.83 × 89,366.94
4. Step 4: Simplify right side
   123,416.10x = 15,199,603,329.76
5. Step 5: Solve for x
   x = 15,199,603,329.76/123,416.10
6. Step 6: Final answer
   x = 123,157.38