Finding the Fourth Proportional to 82,180.71, 113,423.27 and 47,720.07

Step by Step Solution

1. Step 1: Write the proportion equation
   82,180.71 : 113,423.27 = 47,720.07 : x
2. Step 2: Convert to fraction form
   82,180.71/113,423.27 = 47,720.07/x
3. Step 3: Cross multiply
   82,180.71x = 113,423.27 × 47,720.07
4. Step 4: Simplify right side
   82,180.71x = 5,412,566,145.43
5. Step 5: Solve for x
   x = 5,412,566,145.43/82,180.71
6. Step 6: Final answer
   x = 65,861.76