Finding the Fourth Proportional to 138,858.56, 208,244.76 and 50,100.56

Step by Step Solution

1. Step 1: Write the proportion equation
   138,858.56 : 208,244.76 = 50,100.56 : x
2. Step 2: Convert to fraction form
   138,858.56/208,244.76 = 50,100.56/x
3. Step 3: Cross multiply
   138,858.56x = 208,244.76 × 50,100.56
4. Step 4: Simplify right side
   138,858.56x = 10,433,179,093.07
5. Step 5: Solve for x
   x = 10,433,179,093.07/138,858.56
6. Step 6: Final answer
   x = 75,135.30