Finding the Fourth Proportional to 115,050.80, 158,769.78 and 64,749.80

Step by Step Solution

1. Step 1: Write the proportion equation
   115,050.80 : 158,769.78 = 64,749.80 : x
2. Step 2: Convert to fraction form
   115,050.80/158,769.78 = 64,749.80/x
3. Step 3: Cross multiply
   115,050.80x = 158,769.78 × 64,749.80
4. Step 4: Simplify right side
   115,050.80x = 10,280,311,501.04
5. Step 5: Solve for x
   x = 10,280,311,501.04/115,050.80
6. Step 6: Final answer
   x = 89,354.54