Finding the Fourth Proportional to 83,144.78, 124,748.15 and 49,888.71

Step by Step Solution

1. Step 1: Write the proportion equation
   83,144.78 : 124,748.15 = 49,888.71 : x
2. Step 2: Convert to fraction form
   83,144.78/124,748.15 = 49,888.71/x
3. Step 3: Cross multiply
   83,144.78x = 124,748.15 × 49,888.71
4. Step 4: Simplify right side
   83,144.78x = 6,223,524,309.57
5. Step 5: Solve for x
   x = 6,223,524,309.57/83,144.78
6. Step 6: Final answer
   x = 74,851.66