Finding the Fourth Proportional to 50,781.69, 76,521.75 and 42,092.21

Step by Step Solution

1. Step 1: Write the proportion equation
   50,781.69 : 76,521.75 = 42,092.21 : x
2. Step 2: Convert to fraction form
   50,781.69/76,521.75 = 42,092.21/x
3. Step 3: Cross multiply
   50,781.69x = 76,521.75 × 42,092.21
4. Step 4: Simplify right side
   50,781.69x = 3,220,969,187.96
5. Step 5: Solve for x
   x = 3,220,969,187.96/50,781.69
6. Step 6: Final answer
   x = 63,427.77