Finding the Fourth Proportional to 115,291.48, 159,109.56 and 64,993.72

Step by Step Solution

1. Step 1: Write the proportion equation
   115,291.48 : 159,109.56 = 64,993.72 : x
2. Step 2: Convert to fraction form
   115,291.48/159,109.56 = 64,993.72/x
3. Step 3: Cross multiply
   115,291.48x = 159,109.56 × 64,993.72
4. Step 4: Simplify right side
   115,291.48x = 10,341,122,191.96
5. Step 5: Solve for x
   x = 10,341,122,191.96/115,291.48
6. Step 6: Final answer
   x = 89,695.46