Finding the Fourth Proportional to 113,614, 156,780.80 and 65,205.68

Step by Step Solution

1. Step 1: Write the proportion equation
   113,614 : 156,780.80 = 65,205.68 : x
2. Step 2: Convert to fraction form
   113,614/156,780.80 = 65,205.68/x
3. Step 3: Cross multiply
   113,614x = 156,780.80 × 65,205.68
4. Step 4: Simplify right side
   113,614x = 10,222,998,674.94
5. Step 5: Solve for x
   x = 10,222,998,674.94/113,614
6. Step 6: Final answer
   x = 89,980.10