Finding the Fourth Proportional to 54,861.82, 81,811 and 54,362.86

Step by Step Solution

1. Step 1: Write the proportion equation
   54,861.82 : 81,811 = 54,362.86 : x
2. Step 2: Convert to fraction form
   54,861.82/81,811 = 54,362.86/x
3. Step 3: Cross multiply
   54,861.82x = 81,811 × 54,362.86
4. Step 4: Simplify right side
   54,861.82x = 4,447,479,939.46
5. Step 5: Solve for x
   x = 4,447,479,939.46/54,861.82
6. Step 6: Final answer
   x = 81,066.94