Finding the Fourth Proportional to 89,121.31, 122,941.40 and 60,431.27

Step by Step Solution

1. Step 1: Write the proportion equation
   89,121.31 : 122,941.40 = 60,431.27 : x
2. Step 2: Convert to fraction form
   89,121.31/122,941.40 = 60,431.27/x
3. Step 3: Cross multiply
   89,121.31x = 122,941.40 × 60,431.27
4. Step 4: Simplify right side
   89,121.31x = 7,429,504,020.71
5. Step 5: Solve for x
   x = 7,429,504,020.71/89,121.31
6. Step 6: Final answer
   x = 83,363.95