Finding the Fourth Proportional to 47,200.79, 65,137.56 and 25,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   47,200.79 : 65,137.56 = 25,980.50 : x
2. Step 2: Convert to fraction form
   47,200.79/65,137.56 = 25,980.50/x
3. Step 3: Cross multiply
   47,200.79x = 65,137.56 × 25,980.50
4. Step 4: Simplify right side
   47,200.79x = 1,692,306,377.58
5. Step 5: Solve for x
   x = 1,692,306,377.58/47,200.79
6. Step 6: Final answer
   x = 35,853.35