Finding the Fourth Proportional to 60,991.10, 84,205.92 and 39,196.21

Step by Step Solution

1. Step 1: Write the proportion equation
   60,991.10 : 84,205.92 = 39,196.21 : x
2. Step 2: Convert to fraction form
   60,991.10/84,205.92 = 39,196.21/x
3. Step 3: Cross multiply
   60,991.10x = 84,205.92 × 39,196.21
4. Step 4: Simplify right side
   60,991.10x = 3,300,552,306.55
5. Step 5: Solve for x
   x = 3,300,552,306.55/60,991.10
6. Step 6: Final answer
   x = 54,115.31