Finding the Fourth Proportional to 89,049.72, 122,784.34 and 71,087.16

Step by Step Solution

1. Step 1: Write the proportion equation
   89,049.72 : 122,784.34 = 71,087.16 : x
2. Step 2: Convert to fraction form
   89,049.72/122,784.34 = 71,087.16/x
3. Step 3: Cross multiply
   89,049.72x = 122,784.34 × 71,087.16
4. Step 4: Simplify right side
   89,049.72x = 8,728,390,023.07
5. Step 5: Solve for x
   x = 8,728,390,023.07/89,049.72
6. Step 6: Final answer
   x = 98,017.04