Finding the Fourth Proportional to 81,601.82, 122,314.16 and 31,667.21

Step by Step Solution

1. Step 1: Write the proportion equation
   81,601.82 : 122,314.16 = 31,667.21 : x
2. Step 2: Convert to fraction form
   81,601.82/122,314.16 = 31,667.21/x
3. Step 3: Cross multiply
   81,601.82x = 122,314.16 × 31,667.21
4. Step 4: Simplify right side
   81,601.82x = 3,873,347,420.79
5. Step 5: Solve for x
   x = 3,873,347,420.79/81,601.82
6. Step 6: Final answer
   x = 47,466.44