Finding the Fourth Proportional to 113,615, 156,789.24 and 65,896.64

Step by Step Solution

1. Step 1: Write the proportion equation
   113,615 : 156,789.24 = 65,896.64 : x
2. Step 2: Convert to fraction form
   113,615/156,789.24 = 65,896.64/x
3. Step 3: Cross multiply
   113,615x = 156,789.24 × 65,896.64
4. Step 4: Simplify right side
   113,615x = 10,331,884,104.15
5. Step 5: Solve for x
   x = 10,331,884,104.15/113,615
6. Step 6: Final answer
   x = 90,937.68