Finding the Fourth Proportional to 51,768.48, 71,439.56 and 30,549.68

Step by Step Solution

1. Step 1: Write the proportion equation
   51,768.48 : 71,439.56 = 30,549.68 : x
2. Step 2: Convert to fraction form
   51,768.48/71,439.56 = 30,549.68/x
3. Step 3: Cross multiply
   51,768.48x = 71,439.56 × 30,549.68
4. Step 4: Simplify right side
   51,768.48x = 2,182,455,697.34
5. Step 5: Solve for x
   x = 2,182,455,697.34/51,768.48
6. Step 6: Final answer
   x = 42,158.00