Finding the Fourth Proportional to 57,981, 79,414.24 and 54,576.56

Step by Step Solution

1. Step 1: Write the proportion equation
   57,981 : 79,414.24 = 54,576.56 : x
2. Step 2: Convert to fraction form
   57,981/79,414.24 = 54,576.56/x
3. Step 3: Cross multiply
   57,981x = 79,414.24 × 54,576.56
4. Step 4: Simplify right side
   57,981x = 4,334,156,034.21
5. Step 5: Solve for x
   x = 4,334,156,034.21/57,981
6. Step 6: Final answer
   x = 74,751.32