Finding the Fourth Proportional to 92,823.48, 139,212.90 and 42,855.57

Step by Step Solution

1. Step 1: Write the proportion equation
   92,823.48 : 139,212.90 = 42,855.57 : x
2. Step 2: Convert to fraction form
   92,823.48/139,212.90 = 42,855.57/x
3. Step 3: Cross multiply
   92,823.48x = 139,212.90 × 42,855.57
4. Step 4: Simplify right side
   92,823.48x = 5,966,048,180.85
5. Step 5: Solve for x
   x = 5,966,048,180.85/92,823.48
6. Step 6: Final answer
   x = 64,273.05