Finding the Fourth Proportional to 113,155.22, 156,136.86 and 65,399.36

Step by Step Solution

1. Step 1: Write the proportion equation
   113,155.22 : 156,136.86 = 65,399.36 : x
2. Step 2: Convert to fraction form
   113,155.22/156,136.86 = 65,399.36/x
3. Step 3: Cross multiply
   113,155.22x = 156,136.86 × 65,399.36
4. Step 4: Simplify right side
   113,155.22x = 10,211,250,716.41
5. Step 5: Solve for x
   x = 10,211,250,716.41/113,155.22
6. Step 6: Final answer
   x = 90,241.09