Finding the Fourth Proportional to 113,757.59, 156,992.81 and 65,375.07

Step by Step Solution

1. Step 1: Write the proportion equation
   113,757.59 : 156,992.81 = 65,375.07 : x
2. Step 2: Convert to fraction form
   113,757.59/156,992.81 = 65,375.07/x
3. Step 3: Cross multiply
   113,757.59x = 156,992.81 × 65,375.07
4. Step 4: Simplify right side
   113,757.59x = 10,263,415,616.37
5. Step 5: Solve for x
   x = 10,263,415,616.37/113,757.59
6. Step 6: Final answer
   x = 90,221.81