Finding the Fourth Proportional to 42,018.44, 57,985.33 and 23,155.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,018.44 : 57,985.33 = 23,155.56 : x
2. Step 2: Convert to fraction form
   42,018.44/57,985.33 = 23,155.56/x
3. Step 3: Cross multiply
   42,018.44x = 57,985.33 × 23,155.56
4. Step 4: Simplify right side
   42,018.44x = 1,342,682,787.93
5. Step 5: Solve for x
   x = 1,342,682,787.93/42,018.44
6. Step 6: Final answer
   x = 31,954.61