Finding the Fourth Proportional to 113,647.81, 156,802.48 and 65,249.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,647.81 : 156,802.48 = 65,249.50 : x
2. Step 2: Convert to fraction form
   113,647.81/156,802.48 = 65,249.50/x
3. Step 3: Cross multiply
   113,647.81x = 156,802.48 × 65,249.50
4. Step 4: Simplify right side
   113,647.81x = 10,231,283,418.76
5. Step 5: Solve for x
   x = 10,231,283,418.76/113,647.81
6. Step 6: Final answer
   x = 90,026.23