Finding the Fourth Proportional to 95,485.82, 131,721.03 and 64,860.50

Step by Step Solution

1. Step 1: Write the proportion equation
   95,485.82 : 131,721.03 = 64,860.50 : x
2. Step 2: Convert to fraction form
   95,485.82/131,721.03 = 64,860.50/x
3. Step 3: Cross multiply
   95,485.82x = 131,721.03 × 64,860.50
4. Step 4: Simplify right side
   95,485.82x = 8,543,491,203.86
5. Step 5: Solve for x
   x = 8,543,491,203.86/95,485.82
6. Step 6: Final answer
   x = 89,473.92