Finding the Fourth Proportional to 51,801.82, 71,486.79 and 30,591.55

Step by Step Solution

1. Step 1: Write the proportion equation
   51,801.82 : 71,486.79 = 30,591.55 : x
2. Step 2: Convert to fraction form
   51,801.82/71,486.79 = 30,591.55/x
3. Step 3: Cross multiply
   51,801.82x = 71,486.79 × 30,591.55
4. Step 4: Simplify right side
   51,801.82x = 2,186,891,710.62
5. Step 5: Solve for x
   x = 2,186,891,710.62/51,801.82
6. Step 6: Final answer
   x = 42,216.50