Finding the Fourth Proportional to 78,562.28, 108,418.20 and 42,754.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,562.28 : 108,418.20 = 42,754.56 : x
2. Step 2: Convert to fraction form
   78,562.28/108,418.20 = 42,754.56/x
3. Step 3: Cross multiply
   78,562.28x = 108,418.20 × 42,754.56
4. Step 4: Simplify right side
   78,562.28x = 4,635,372,436.99
5. Step 5: Solve for x
   x = 4,635,372,436.99/78,562.28
6. Step 6: Final answer
   x = 59,002.52