Finding the Fourth Proportional to 55,769.52, 76,962.20 and 30,619

Step by Step Solution

1. Step 1: Write the proportion equation
   55,769.52 : 76,962.20 = 30,619 : x
2. Step 2: Convert to fraction form
   55,769.52/76,962.20 = 30,619/x
3. Step 3: Cross multiply
   55,769.52x = 76,962.20 × 30,619
4. Step 4: Simplify right side
   55,769.52x = 2,356,505,601.80
5. Step 5: Solve for x
   x = 2,356,505,601.80/55,769.52
6. Step 6: Final answer
   x = 42,254.36