Finding the Fourth Proportional to 55,139.84, 82,086.18 and 54,811.79

Step by Step Solution

1. Step 1: Write the proportion equation
   55,139.84 : 82,086.18 = 54,811.79 : x
2. Step 2: Convert to fraction form
   55,139.84/82,086.18 = 54,811.79/x
3. Step 3: Cross multiply
   55,139.84x = 82,086.18 × 54,811.79
4. Step 4: Simplify right side
   55,139.84x = 4,499,290,460.06
5. Step 5: Solve for x
   x = 4,499,290,460.06/55,139.84
6. Step 6: Final answer
   x = 81,597.81