Finding the Fourth Proportional to 89,597.88, 123,378.42 and 87,608.94

Step by Step Solution

1. Step 1: Write the proportion equation
   89,597.88 : 123,378.42 = 87,608.94 : x
2. Step 2: Convert to fraction form
   89,597.88/123,378.42 = 87,608.94/x
3. Step 3: Cross multiply
   89,597.88x = 123,378.42 × 87,608.94
4. Step 4: Simplify right side
   89,597.88x = 10,809,052,595.07
5. Step 5: Solve for x
   x = 10,809,052,595.07/89,597.88
6. Step 6: Final answer
   x = 120,639.60