Finding the Fourth Proportional to 115,177.50, 158,945.22 and 64,876.50

Step by Step Solution

1. Step 1: Write the proportion equation
   115,177.50 : 158,945.22 = 64,876.50 : x
2. Step 2: Convert to fraction form
   115,177.50/158,945.22 = 64,876.50/x
3. Step 3: Cross multiply
   115,177.50x = 158,945.22 × 64,876.50
4. Step 4: Simplify right side
   115,177.50x = 10,311,809,565.33
5. Step 5: Solve for x
   x = 10,311,809,565.33/115,177.50
6. Step 6: Final answer
   x = 89,529.72