Finding the Fourth Proportional to 113,608.69, 156,780.62 and 65,890.33

Step by Step Solution

1. Step 1: Write the proportion equation
   113,608.69 : 156,780.62 = 65,890.33 : x
2. Step 2: Convert to fraction form
   113,608.69/156,780.62 = 65,890.33/x
3. Step 3: Cross multiply
   113,608.69x = 156,780.62 × 65,890.33
4. Step 4: Simplify right side
   113,608.69x = 10,330,326,789.40
5. Step 5: Solve for x
   x = 10,330,326,789.40/113,608.69
6. Step 6: Final answer
   x = 90,929.02