Finding the Fourth Proportional to 57,085.94, 78,853.90 and 43,821.12

Step by Step Solution

1. Step 1: Write the proportion equation
   57,085.94 : 78,853.90 = 43,821.12 : x
2. Step 2: Convert to fraction form
   57,085.94/78,853.90 = 43,821.12/x
3. Step 3: Cross multiply
   57,085.94x = 78,853.90 × 43,821.12
4. Step 4: Simplify right side
   57,085.94x = 3,455,466,214.37
5. Step 5: Solve for x
   x = 3,455,466,214.37/57,085.94
6. Step 6: Final answer
   x = 60,530.95