Finding the Fourth Proportional to 115,905.83, 159,939.29 and 65,604.83

Step by Step Solution

1. Step 1: Write the proportion equation
   115,905.83 : 159,939.29 = 65,604.83 : x
2. Step 2: Convert to fraction form
   115,905.83/159,939.29 = 65,604.83/x
3. Step 3: Cross multiply
   115,905.83x = 159,939.29 × 65,604.83
4. Step 4: Simplify right side
   115,905.83x = 10,492,789,525.83
5. Step 5: Solve for x
   x = 10,492,789,525.83/115,905.83
6. Step 6: Final answer
   x = 90,528.58