Finding the Fourth Proportional to 82,719.60, 123,980.97 and 47,585.43

Step by Step Solution

1. Step 1: Write the proportion equation
   82,719.60 : 123,980.97 = 47,585.43 : x
2. Step 2: Convert to fraction form
   82,719.60/123,980.97 = 47,585.43/x
3. Step 3: Cross multiply
   82,719.60x = 123,980.97 × 47,585.43
4. Step 4: Simplify right side
   82,719.60x = 5,899,687,769.27
5. Step 5: Solve for x
   x = 5,899,687,769.27/82,719.60
6. Step 6: Final answer
   x = 71,321.52