Finding the Fourth Proportional to 89,256.56, 123,074.52 and 57,381.44

Step by Step Solution

1. Step 1: Write the proportion equation
   89,256.56 : 123,074.52 = 57,381.44 : x
2. Step 2: Convert to fraction form
   89,256.56/123,074.52 = 57,381.44/x
3. Step 3: Cross multiply
   89,256.56x = 123,074.52 × 57,381.44
4. Step 4: Simplify right side
   89,256.56x = 7,062,193,184.91
5. Step 5: Solve for x
   x = 7,062,193,184.91/89,256.56
6. Step 6: Final answer
   x = 79,122.40