Finding the Fourth Proportional to 82,378.71, 123,592.73 and 42,963.57

Step by Step Solution

1. Step 1: Write the proportion equation
   82,378.71 : 123,592.73 = 42,963.57 : x
2. Step 2: Convert to fraction form
   82,378.71/123,592.73 = 42,963.57/x
3. Step 3: Cross multiply
   82,378.71x = 123,592.73 × 42,963.57
4. Step 4: Simplify right side
   82,378.71x = 5,309,984,692.03
5. Step 5: Solve for x
   x = 5,309,984,692.03/82,378.71
6. Step 6: Final answer
   x = 64,458.22