Finding the Fourth Proportional to 55,796.48, 76,995.20 and 30,641.28

Step by Step Solution

1. Step 1: Write the proportion equation
   55,796.48 : 76,995.20 = 30,641.28 : x
2. Step 2: Convert to fraction form
   55,796.48/76,995.20 = 30,641.28/x
3. Step 3: Cross multiply
   55,796.48x = 76,995.20 × 30,641.28
4. Step 4: Simplify right side
   55,796.48x = 2,359,231,481.86
5. Step 5: Solve for x
   x = 2,359,231,481.86/55,796.48
6. Step 6: Final answer
   x = 42,282.80