Finding the Fourth Proportional to 115,293.48, 159,112.32 and 64,995.72

Step by Step Solution

1. Step 1: Write the proportion equation
   115,293.48 : 159,112.32 = 64,995.72 : x
2. Step 2: Convert to fraction form
   115,293.48/159,112.32 = 64,995.72/x
3. Step 3: Cross multiply
   115,293.48x = 159,112.32 × 64,995.72
4. Step 4: Simplify right side
   115,293.48x = 10,341,619,799.27
5. Step 5: Solve for x
   x = 10,341,619,799.27/115,293.48
6. Step 6: Final answer
   x = 89,698.22