Finding the Fourth Proportional to 89,964.07, 123,250.21 and 86,599.73

Step by Step Solution

1. Step 1: Write the proportion equation
   89,964.07 : 123,250.21 = 86,599.73 : x
2. Step 2: Convert to fraction form
   89,964.07/123,250.21 = 86,599.73/x
3. Step 3: Cross multiply
   89,964.07x = 123,250.21 × 86,599.73
4. Step 4: Simplify right side
   89,964.07x = 10,673,435,000.07
5. Step 5: Solve for x
   x = 10,673,435,000.07/89,964.07
6. Step 6: Final answer
   x = 118,641.09