Finding the Fourth Proportional to 113,560.48, 156,701.52 and 65,828.80

Step by Step Solution

1. Step 1: Write the proportion equation
   113,560.48 : 156,701.52 = 65,828.80 : x
2. Step 2: Convert to fraction form
   113,560.48/156,701.52 = 65,828.80/x
3. Step 3: Cross multiply
   113,560.48x = 156,701.52 × 65,828.80
4. Step 4: Simplify right side
   113,560.48x = 10,315,473,019.78
5. Step 5: Solve for x
   x = 10,315,473,019.78/113,560.48
6. Step 6: Final answer
   x = 90,836.82