Finding the Fourth Proportional to 83,805.72, 115,618.92 and 47,976.42

Step by Step Solution

1. Step 1: Write the proportion equation
   83,805.72 : 115,618.92 = 47,976.42 : x
2. Step 2: Convert to fraction form
   83,805.72/115,618.92 = 47,976.42/x
3. Step 3: Cross multiply
   83,805.72x = 115,618.92 × 47,976.42
4. Step 4: Simplify right side
   83,805.72x = 5,546,981,865.87
5. Step 5: Solve for x
   x = 5,546,981,865.87/83,805.72
6. Step 6: Final answer
   x = 66,188.58