Finding the Fourth Proportional to 115,725.83, 159,716.34 and 64,741.39

Step by Step Solution

1. Step 1: Write the proportion equation
   115,725.83 : 159,716.34 = 64,741.39 : x
2. Step 2: Convert to fraction form
   115,725.83/159,716.34 = 64,741.39/x
3. Step 3: Cross multiply
   115,725.83x = 159,716.34 × 64,741.39
4. Step 4: Simplify right side
   115,725.83x = 10,340,257,458.02
5. Step 5: Solve for x
   x = 10,340,257,458.02/115,725.83
6. Step 6: Final answer
   x = 89,351.34