Finding the Fourth Proportional to 39,759.34, 54,868.37 and 21,854.22

Step by Step Solution

1. Step 1: Write the proportion equation
   39,759.34 : 54,868.37 = 21,854.22 : x
2. Step 2: Convert to fraction form
   39,759.34/54,868.37 = 21,854.22/x
3. Step 3: Cross multiply
   39,759.34x = 54,868.37 × 21,854.22
4. Step 4: Simplify right side
   39,759.34x = 1,199,105,429.02
5. Step 5: Solve for x
   x = 1,199,105,429.02/39,759.34
6. Step 6: Final answer
   x = 30,159.09