Finding the Fourth Proportional to 49,131.50, 67,812.42 and 31,223

Step by Step Solution

1. Step 1: Write the proportion equation
   49,131.50 : 67,812.42 = 31,223 : x
2. Step 2: Convert to fraction form
   49,131.50/67,812.42 = 31,223/x
3. Step 3: Cross multiply
   49,131.50x = 67,812.42 × 31,223
4. Step 4: Simplify right side
   49,131.50x = 2,117,307,189.66
5. Step 5: Solve for x
   x = 2,117,307,189.66/49,131.50
6. Step 6: Final answer
   x = 43,094.70