Finding the Fourth Proportional to 57,597.72, 79,521.63 and 54,801.09

Step by Step Solution

1. Step 1: Write the proportion equation
   57,597.72 : 79,521.63 = 54,801.09 : x
2. Step 2: Convert to fraction form
   57,597.72/79,521.63 = 54,801.09/x
3. Step 3: Cross multiply
   57,597.72x = 79,521.63 × 54,801.09
4. Step 4: Simplify right side
   57,597.72x = 4,357,872,002.58
5. Step 5: Solve for x
   x = 4,357,872,002.58/57,597.72
6. Step 6: Final answer
   x = 75,660.49