Finding the Fourth Proportional to 88,644.89, 122,847.46 and 86,962.72

Step by Step Solution

1. Step 1: Write the proportion equation
   88,644.89 : 122,847.46 = 86,962.72 : x
2. Step 2: Convert to fraction form
   88,644.89/122,847.46 = 86,962.72/x
3. Step 3: Cross multiply
   88,644.89x = 122,847.46 × 86,962.72
4. Step 4: Simplify right side
   88,644.89x = 10,683,149,266.69
5. Step 5: Solve for x
   x = 10,683,149,266.69/88,644.89
6. Step 6: Final answer
   x = 120,516.24