Finding the Fourth Proportional to 115,891.34, 159,922.43 and 64,892.38

Step by Step Solution

1. Step 1: Write the proportion equation
   115,891.34 : 159,922.43 = 64,892.38 : x
2. Step 2: Convert to fraction form
   115,891.34/159,922.43 = 64,892.38/x
3. Step 3: Cross multiply
   115,891.34x = 159,922.43 × 64,892.38
4. Step 4: Simplify right side
   115,891.34x = 10,377,746,860.51
5. Step 5: Solve for x
   x = 10,377,746,860.51/115,891.34
6. Step 6: Final answer
   x = 89,547.22