Finding the Fourth Proportional to 115,588.80, 159,504.72 and 65,284.56

Step by Step Solution

1. Step 1: Write the proportion equation
   115,588.80 : 159,504.72 = 65,284.56 : x
2. Step 2: Convert to fraction form
   115,588.80/159,504.72 = 65,284.56/x
3. Step 3: Cross multiply
   115,588.80x = 159,504.72 × 65,284.56
4. Step 4: Simplify right side
   115,588.80x = 10,413,195,463.12
5. Step 5: Solve for x
   x = 10,413,195,463.12/115,588.80
6. Step 6: Final answer
   x = 90,088.27