Finding the Fourth Proportional to 139,282.56, 208,483.20 and 89,295.84

Step by Step Solution

1. Step 1: Write the proportion equation
   139,282.56 : 208,483.20 = 89,295.84 : x
2. Step 2: Convert to fraction form
   139,282.56/208,483.20 = 89,295.84/x
3. Step 3: Cross multiply
   139,282.56x = 208,483.20 × 89,295.84
4. Step 4: Simplify right side
   139,282.56x = 18,616,682,469.89
5. Step 5: Solve for x
   x = 18,616,682,469.89/139,282.56
6. Step 6: Final answer
   x = 133,661.26