Finding the Fourth Proportional to 113,991.48, 170,980.74 and 30,879

Step by Step Solution

1. Step 1: Write the proportion equation
   113,991.48 : 170,980.74 = 30,879 : x
2. Step 2: Convert to fraction form
   113,991.48/170,980.74 = 30,879/x
3. Step 3: Cross multiply
   113,991.48x = 170,980.74 × 30,879
4. Step 4: Simplify right side
   113,991.48x = 5,279,714,270.46
5. Step 5: Solve for x
   x = 5,279,714,270.46/113,991.48
6. Step 6: Final answer
   x = 46,316.74