Finding the Fourth Proportional to 53,165.89, 79,639.48 and 38,404.45

Step by Step Solution

1. Step 1: Write the proportion equation
   53,165.89 : 79,639.48 = 38,404.45 : x
2. Step 2: Convert to fraction form
   53,165.89/79,639.48 = 38,404.45/x
3. Step 3: Cross multiply
   53,165.89x = 79,639.48 × 38,404.45
4. Step 4: Simplify right side
   53,165.89x = 3,058,510,427.69
5. Step 5: Solve for x
   x = 3,058,510,427.69/53,165.89
6. Step 6: Final answer
   x = 57,527.68