Finding the Fourth Proportional to 78,077.99, 107,747.60 and 42,267.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,077.99 : 107,747.60 = 42,267.98 : x
2. Step 2: Convert to fraction form
   78,077.99/107,747.60 = 42,267.98/x
3. Step 3: Cross multiply
   78,077.99x = 107,747.60 × 42,267.98
4. Step 4: Simplify right side
   78,077.99x = 4,554,273,401.85
5. Step 5: Solve for x
   x = 4,554,273,401.85/78,077.99
6. Step 6: Final answer
   x = 58,329.80