Finding the Fourth Proportional to 115,766.16, 159,750.72 and 64,769.04

Step by Step Solution

1. Step 1: Write the proportion equation
   115,766.16 : 159,750.72 = 64,769.04 : x
2. Step 2: Convert to fraction form
   115,766.16/159,750.72 = 64,769.04/x
3. Step 3: Cross multiply
   115,766.16x = 159,750.72 × 64,769.04
4. Step 4: Simplify right side
   115,766.16x = 10,346,900,773.71
5. Step 5: Solve for x
   x = 10,346,900,773.71/115,766.16
6. Step 6: Final answer
   x = 89,377.59