Finding the Fourth Proportional to 120,978.26, 181,112.52 and 84,829.37

Step by Step Solution

1. Step 1: Write the proportion equation
   120,978.26 : 181,112.52 = 84,829.37 : x
2. Step 2: Convert to fraction form
   120,978.26/181,112.52 = 84,829.37/x
3. Step 3: Cross multiply
   120,978.26x = 181,112.52 × 84,829.37
4. Step 4: Simplify right side
   120,978.26x = 15,363,660,065.15
5. Step 5: Solve for x
   x = 15,363,660,065.15/120,978.26
6. Step 6: Final answer
   x = 126,995.22