Finding the Fourth Proportional to 113,605.69, 156,776.48 and 65,887.33

Step by Step Solution

1. Step 1: Write the proportion equation
   113,605.69 : 156,776.48 = 65,887.33 : x
2. Step 2: Convert to fraction form
   113,605.69/156,776.48 = 65,887.33/x
3. Step 3: Cross multiply
   113,605.69x = 156,776.48 × 65,887.33
4. Step 4: Simplify right side
   113,605.69x = 10,329,583,674.00
5. Step 5: Solve for x
   x = 10,329,583,674.00/113,605.69
6. Step 6: Final answer
   x = 90,924.88