Finding the Fourth Proportional to 85,300.78, 127,797.94 and 50,221.30

Step by Step Solution

1. Step 1: Write the proportion equation
   85,300.78 : 127,797.94 = 50,221.30 : x
2. Step 2: Convert to fraction form
   85,300.78/127,797.94 = 50,221.30/x
3. Step 3: Cross multiply
   85,300.78x = 127,797.94 × 50,221.30
4. Step 4: Simplify right side
   85,300.78x = 6,418,178,684.12
5. Step 5: Solve for x
   x = 6,418,178,684.12/85,300.78
6. Step 6: Final answer
   x = 75,241.74