Finding the Fourth Proportional to 82,402.52, 113,707.60 and 65,447.80

Step by Step Solution

1. Step 1: Write the proportion equation
   82,402.52 : 113,707.60 = 65,447.80 : x
2. Step 2: Convert to fraction form
   82,402.52/113,707.60 = 65,447.80/x
3. Step 3: Cross multiply
   82,402.52x = 113,707.60 × 65,447.80
4. Step 4: Simplify right side
   82,402.52x = 7,441,911,815.39
5. Step 5: Solve for x
   x = 7,441,911,815.39/82,402.52
6. Step 6: Final answer
   x = 90,311.71