Finding the Fourth Proportional to 51,936.15, 71,686.59 and 30,722.79

Step by Step Solution

1. Step 1: Write the proportion equation
   51,936.15 : 71,686.59 = 30,722.79 : x
2. Step 2: Convert to fraction form
   51,936.15/71,686.59 = 30,722.79/x
3. Step 3: Cross multiply
   51,936.15x = 71,686.59 × 30,722.79
4. Step 4: Simplify right side
   51,936.15x = 2,202,412,050.39
5. Step 5: Solve for x
   x = 2,202,412,050.39/51,936.15
6. Step 6: Final answer
   x = 42,406.15