Finding the Fourth Proportional to 82,690.72, 123,937.65 and 47,556.56

Step by Step Solution

1. Step 1: Write the proportion equation
   82,690.72 : 123,937.65 = 47,556.56 : x
2. Step 2: Convert to fraction form
   82,690.72/123,937.65 = 47,556.56/x
3. Step 3: Cross multiply
   82,690.72x = 123,937.65 × 47,556.56
4. Step 4: Simplify right side
   82,690.72x = 5,894,048,598.33
5. Step 5: Solve for x
   x = 5,894,048,598.33/82,690.72
6. Step 6: Final answer
   x = 71,278.24