Finding the Fourth Proportional to 31,667.34, 47,477.97 and 20,585.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,667.34 : 47,477.97 = 20,585.10 : x
2. Step 2: Convert to fraction form
   31,667.34/47,477.97 = 20,585.10/x
3. Step 3: Cross multiply
   31,667.34x = 47,477.97 × 20,585.10
4. Step 4: Simplify right side
   31,667.34x = 977,338,760.25
5. Step 5: Solve for x
   x = 977,338,760.25/31,667.34
6. Step 6: Final answer
   x = 30,862.67