Finding the Fourth Proportional to 113,399.48, 156,481.11 and 65,656.05

Step by Step Solution

1. Step 1: Write the proportion equation
   113,399.48 : 156,481.11 = 65,656.05 : x
2. Step 2: Convert to fraction form
   113,399.48/156,481.11 = 65,656.05/x
3. Step 3: Cross multiply
   113,399.48x = 156,481.11 × 65,656.05
4. Step 4: Simplify right side
   113,399.48x = 10,273,931,582.22
5. Step 5: Solve for x
   x = 10,273,931,582.22/113,399.48
6. Step 6: Final answer
   x = 90,599.46