Finding the Fourth Proportional to 53,404.88, 80,119.43 and 28,431.77

Step by Step Solution

1. Step 1: Write the proportion equation
   53,404.88 : 80,119.43 = 28,431.77 : x
2. Step 2: Convert to fraction form
   53,404.88/80,119.43 = 28,431.77/x
3. Step 3: Cross multiply
   53,404.88x = 80,119.43 × 28,431.77
4. Step 4: Simplify right side
   53,404.88x = 2,277,936,663.54
5. Step 5: Solve for x
   x = 2,277,936,663.54/53,404.88
6. Step 6: Final answer
   x = 42,654.10