Finding the Fourth Proportional to 78,077.72, 107,747.29 and 42,267.73

Step by Step Solution

1. Step 1: Write the proportion equation
   78,077.72 : 107,747.29 = 42,267.73 : x
2. Step 2: Convert to fraction form
   78,077.72/107,747.29 = 42,267.73/x
3. Step 3: Cross multiply
   78,077.72x = 107,747.29 × 42,267.73
4. Step 4: Simplify right side
   78,077.72x = 4,554,233,361.95
5. Step 5: Solve for x
   x = 4,554,233,361.95/78,077.72
6. Step 6: Final answer
   x = 58,329.49