Finding the Fourth Proportional to 67,704.48, 93,442.50 and 42,215

Step by Step Solution

1. Step 1: Write the proportion equation
   67,704.48 : 93,442.50 = 42,215 : x
2. Step 2: Convert to fraction form
   67,704.48/93,442.50 = 42,215/x
3. Step 3: Cross multiply
   67,704.48x = 93,442.50 × 42,215
4. Step 4: Simplify right side
   67,704.48x = 3,944,675,137.50
5. Step 5: Solve for x
   x = 3,944,675,137.50/67,704.48
6. Step 6: Final answer
   x = 58,263.13