Finding the Fourth Proportional to 83,139.72, 124,740.56 and 49,883.65

Step by Step Solution

1. Step 1: Write the proportion equation
   83,139.72 : 124,740.56 = 49,883.65 : x
2. Step 2: Convert to fraction form
   83,139.72/124,740.56 = 49,883.65/x
3. Step 3: Cross multiply
   83,139.72x = 124,740.56 × 49,883.65
4. Step 4: Simplify right side
   83,139.72x = 6,222,513,968.11
5. Step 5: Solve for x
   x = 6,222,513,968.11/83,139.72
6. Step 6: Final answer
   x = 74,844.06