Finding the Fourth Proportional to 81,484.48, 122,216.34 and 31,530.40

Step by Step Solution

1. Step 1: Write the proportion equation
   81,484.48 : 122,216.34 = 31,530.40 : x
2. Step 2: Convert to fraction form
   81,484.48/122,216.34 = 31,530.40/x
3. Step 3: Cross multiply
   81,484.48x = 122,216.34 × 31,530.40
4. Step 4: Simplify right side
   81,484.48x = 3,853,530,086.74
5. Step 5: Solve for x
   x = 3,853,530,086.74/81,484.48
6. Step 6: Final answer
   x = 47,291.58