Finding the Fourth Proportional to 115,896.53, 159,923.98 and 64,902.17

Step by Step Solution

1. Step 1: Write the proportion equation
   115,896.53 : 159,923.98 = 64,902.17 : x
2. Step 2: Convert to fraction form
   115,896.53/159,923.98 = 64,902.17/x
3. Step 3: Cross multiply
   115,896.53x = 159,923.98 × 64,902.17
4. Step 4: Simplify right side
   115,896.53x = 10,379,413,337.04
5. Step 5: Solve for x
   x = 10,379,413,337.04/115,896.53
6. Step 6: Final answer
   x = 89,557.59