Finding the Fourth Proportional to 89,087.20, 122,911.42 and 60,743.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,087.20 : 122,911.42 = 60,743.68 : x
2. Step 2: Convert to fraction form
   89,087.20/122,911.42 = 60,743.68/x
3. Step 3: Cross multiply
   89,087.20x = 122,911.42 × 60,743.68
4. Step 4: Simplify right side
   89,087.20x = 7,466,091,964.83
5. Step 5: Solve for x
   x = 7,466,091,964.83/89,087.20
6. Step 6: Final answer
   x = 83,806.56