Finding the Fourth Proportional to 113,647.36, 156,829.08 and 65,902.72

Step by Step Solution

1. Step 1: Write the proportion equation
   113,647.36 : 156,829.08 = 65,902.72 : x
2. Step 2: Convert to fraction form
   113,647.36/156,829.08 = 65,902.72/x
3. Step 3: Cross multiply
   113,647.36x = 156,829.08 × 65,902.72
4. Step 4: Simplify right side
   113,647.36x = 10,335,462,947.10
5. Step 5: Solve for x
   x = 10,335,462,947.10/113,647.36
6. Step 6: Final answer
   x = 90,943.27