Finding the Fourth Proportional to 51,300.66, 70,824.36 and 39,105.42

Step by Step Solution

1. Step 1: Write the proportion equation
   51,300.66 : 70,824.36 = 39,105.42 : x
2. Step 2: Convert to fraction form
   51,300.66/70,824.36 = 39,105.42/x
3. Step 3: Cross multiply
   51,300.66x = 70,824.36 × 39,105.42
4. Step 4: Simplify right side
   51,300.66x = 2,769,616,344.03
5. Step 5: Solve for x
   x = 2,769,616,344.03/51,300.66
6. Step 6: Final answer
   x = 53,987.93