Finding the Fourth Proportional to 58,500.72, 80,730.99 and 31,643.21

Step by Step Solution

1. Step 1: Write the proportion equation
   58,500.72 : 80,730.99 = 31,643.21 : x
2. Step 2: Convert to fraction form
   58,500.72/80,730.99 = 31,643.21/x
3. Step 3: Cross multiply
   58,500.72x = 80,730.99 × 31,643.21
4. Step 4: Simplify right side
   58,500.72x = 2,554,587,266.42
5. Step 5: Solve for x
   x = 2,554,587,266.42/58,500.72
6. Step 6: Final answer
   x = 43,667.62