Finding the Fourth Proportional to 115,724.82, 159,708.29 and 64,754.34

Step by Step Solution

1. Step 1: Write the proportion equation
   115,724.82 : 159,708.29 = 64,754.34 : x
2. Step 2: Convert to fraction form
   115,724.82/159,708.29 = 64,754.34/x
3. Step 3: Cross multiply
   115,724.82x = 159,708.29 × 64,754.34
4. Step 4: Simplify right side
   115,724.82x = 10,341,804,911.48
5. Step 5: Solve for x
   x = 10,341,804,911.48/115,724.82
6. Step 6: Final answer
   x = 89,365.49