Finding the Fourth Proportional to 115,856.94, 159,845.42 and 64,862.18

Step by Step Solution

1. Step 1: Write the proportion equation
   115,856.94 : 159,845.42 = 64,862.18 : x
2. Step 2: Convert to fraction form
   115,856.94/159,845.42 = 64,862.18/x
3. Step 3: Cross multiply
   115,856.94x = 159,845.42 × 64,862.18
4. Step 4: Simplify right side
   115,856.94x = 10,367,921,767.14
5. Step 5: Solve for x
   x = 10,367,921,767.14/115,856.94
6. Step 6: Final answer
   x = 89,489.00