Finding the Fourth Proportional to 113,609.22, 156,755.46 and 65,208.18

Step by Step Solution

1. Step 1: Write the proportion equation
   113,609.22 : 156,755.46 = 65,208.18 : x
2. Step 2: Convert to fraction form
   113,609.22/156,755.46 = 65,208.18/x
3. Step 3: Cross multiply
   113,609.22x = 156,755.46 × 65,208.18
4. Step 4: Simplify right side
   113,609.22x = 10,221,737,908.36
5. Step 5: Solve for x
   x = 10,221,737,908.36/113,609.22
6. Step 6: Final answer
   x = 89,972.78