Finding the Fourth Proportional to 78,257.48, 107,994.53 and 42,446.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,257.48 : 107,994.53 = 42,446.72 : x
2. Step 2: Convert to fraction form
   78,257.48/107,994.53 = 42,446.72/x
3. Step 3: Cross multiply
   78,257.48x = 107,994.53 × 42,446.72
4. Step 4: Simplify right side
   78,257.48x = 4,584,013,576.44
5. Step 5: Solve for x
   x = 4,584,013,576.44/78,257.48
6. Step 6: Final answer
   x = 58,576.04