Finding the Fourth Proportional to 57,012.42, 78,702.12 and 43,584.24

Step by Step Solution

1. Step 1: Write the proportion equation
   57,012.42 : 78,702.12 = 43,584.24 : x
2. Step 2: Convert to fraction form
   57,012.42/78,702.12 = 43,584.24/x
3. Step 3: Cross multiply
   57,012.42x = 78,702.12 × 43,584.24
4. Step 4: Simplify right side
   57,012.42x = 3,430,172,086.59
5. Step 5: Solve for x
   x = 3,430,172,086.59/57,012.42
6. Step 6: Final answer
   x = 60,165.35