Finding the Fourth Proportional to 83,146.78, 124,751.15 and 49,890.71

Step by Step Solution

1. Step 1: Write the proportion equation
   83,146.78 : 124,751.15 = 49,890.71 : x
2. Step 2: Convert to fraction form
   83,146.78/124,751.15 = 49,890.71/x
3. Step 3: Cross multiply
   83,146.78x = 124,751.15 × 49,890.71
4. Step 4: Simplify right side
   83,146.78x = 6,223,923,446.82
5. Step 5: Solve for x
   x = 6,223,923,446.82/83,146.78
6. Step 6: Final answer
   x = 74,854.65