Finding the Fourth Proportional to 89,669.20, 123,796.84 and 79,704.40

Step by Step Solution

1. Step 1: Write the proportion equation
   89,669.20 : 123,796.84 = 79,704.40 : x
2. Step 2: Convert to fraction form
   89,669.20/123,796.84 = 79,704.40/x
3. Step 3: Cross multiply
   89,669.20x = 123,796.84 × 79,704.40
4. Step 4: Simplify right side
   89,669.20x = 9,867,152,854.10
5. Step 5: Solve for x
   x = 9,867,152,854.10/89,669.20
6. Step 6: Final answer
   x = 110,039.49