Finding the Fourth Proportional to 58,418.72, 80,648.16 and 35,790.56

Step by Step Solution

1. Step 1: Write the proportion equation
   58,418.72 : 80,648.16 = 35,790.56 : x
2. Step 2: Convert to fraction form
   58,418.72/80,648.16 = 35,790.56/x
3. Step 3: Cross multiply
   58,418.72x = 80,648.16 × 35,790.56
4. Step 4: Simplify right side
   58,418.72x = 2,886,442,809.37
5. Step 5: Solve for x
   x = 2,886,442,809.37/58,418.72
6. Step 6: Final answer
   x = 49,409.55