Finding the Fourth Proportional to 113,404.73, 156,488.36 and 65,661.30

Step by Step Solution

1. Step 1: Write the proportion equation
   113,404.73 : 156,488.36 = 65,661.30 : x
2. Step 2: Convert to fraction form
   113,404.73/156,488.36 = 65,661.30/x
3. Step 3: Cross multiply
   113,404.73x = 156,488.36 × 65,661.30
4. Step 4: Simplify right side
   113,404.73x = 10,275,228,824.16
5. Step 5: Solve for x
   x = 10,275,228,824.16/113,404.73
6. Step 6: Final answer
   x = 90,606.71