Finding the Fourth Proportional to 89,363.88, 122,439.69 and 88,257.06

Step by Step Solution

1. Step 1: Write the proportion equation
   89,363.88 : 122,439.69 = 88,257.06 : x
2. Step 2: Convert to fraction form
   89,363.88/122,439.69 = 88,257.06/x
3. Step 3: Cross multiply
   89,363.88x = 122,439.69 × 88,257.06
4. Step 4: Simplify right side
   89,363.88x = 10,806,167,066.71
5. Step 5: Solve for x
   x = 10,806,167,066.71/89,363.88
6. Step 6: Final answer
   x = 120,923.21