Finding the Fourth Proportional to 120,118.98, 180,162.27 and 31,365.30

Step by Step Solution

1. Step 1: Write the proportion equation
   120,118.98 : 180,162.27 = 31,365.30 : x
2. Step 2: Convert to fraction form
   120,118.98/180,162.27 = 31,365.30/x
3. Step 3: Cross multiply
   120,118.98x = 180,162.27 × 31,365.30
4. Step 4: Simplify right side
   120,118.98x = 5,650,843,647.23
5. Step 5: Solve for x
   x = 5,650,843,647.23/120,118.98
6. Step 6: Final answer
   x = 47,043.72