Finding the Fourth Proportional to 78,076.34, 107,744.85 and 42,266.09

Step by Step Solution

1. Step 1: Write the proportion equation
   78,076.34 : 107,744.85 = 42,266.09 : x
2. Step 2: Convert to fraction form
   78,076.34/107,744.85 = 42,266.09/x
3. Step 3: Cross multiply
   78,076.34x = 107,744.85 × 42,266.09
4. Step 4: Simplify right side
   78,076.34x = 4,553,953,146.91
5. Step 5: Solve for x
   x = 4,553,953,146.91/78,076.34
6. Step 6: Final answer
   x = 58,326.93