Finding the Fourth Proportional to 39,981.56, 55,175.42 and 22,077.71

Step by Step Solution

1. Step 1: Write the proportion equation
   39,981.56 : 55,175.42 = 22,077.71 : x
2. Step 2: Convert to fraction form
   39,981.56/55,175.42 = 22,077.71/x
3. Step 3: Cross multiply
   39,981.56x = 55,175.42 × 22,077.71
4. Step 4: Simplify right side
   39,981.56x = 1,218,146,535.62
5. Step 5: Solve for x
   x = 1,218,146,535.62/39,981.56
6. Step 6: Final answer
   x = 30,467.71