Finding the Fourth Proportional to 70,092.72, 96,724.86 and 39,880.56

Step by Step Solution

1. Step 1: Write the proportion equation
   70,092.72 : 96,724.86 = 39,880.56 : x
2. Step 2: Convert to fraction form
   70,092.72/96,724.86 = 39,880.56/x
3. Step 3: Cross multiply
   70,092.72x = 96,724.86 × 39,880.56
4. Step 4: Simplify right side
   70,092.72x = 3,857,441,582.72
5. Step 5: Solve for x
   x = 3,857,441,582.72/70,092.72
6. Step 6: Final answer
   x = 55,033.41