Finding the Fourth Proportional to 47,131.49, 65,071.91 and 31,237.49

Step by Step Solution

1. Step 1: Write the proportion equation
   47,131.49 : 65,071.91 = 31,237.49 : x
2. Step 2: Convert to fraction form
   47,131.49/65,071.91 = 31,237.49/x
3. Step 3: Cross multiply
   47,131.49x = 65,071.91 × 31,237.49
4. Step 4: Simplify right side
   47,131.49x = 2,032,683,137.91
5. Step 5: Solve for x
   x = 2,032,683,137.91/47,131.49
6. Step 6: Final answer
   x = 43,127.92