Finding the Fourth Proportional to 138,851.84, 208,234.69 and 50,093.78

Step by Step Solution

1. Step 1: Write the proportion equation
   138,851.84 : 208,234.69 = 50,093.78 : x
2. Step 2: Convert to fraction form
   138,851.84/208,234.69 = 50,093.78/x
3. Step 3: Cross multiply
   138,851.84x = 208,234.69 × 50,093.78
4. Step 4: Simplify right side
   138,851.84x = 10,431,261,582.82
5. Step 5: Solve for x
   x = 10,431,261,582.82/138,851.84
6. Step 6: Final answer
   x = 75,125.12