Finding the Fourth Proportional to 42,018.71, 57,986.06 and 23,155.83

Step by Step Solution

1. Step 1: Write the proportion equation
   42,018.71 : 57,986.06 = 23,155.83 : x
2. Step 2: Convert to fraction form
   42,018.71/57,986.06 = 23,155.83/x
3. Step 3: Cross multiply
   42,018.71x = 57,986.06 × 23,155.83
4. Step 4: Simplify right side
   42,018.71x = 1,342,715,231.95
5. Step 5: Solve for x
   x = 1,342,715,231.95/42,018.71
6. Step 6: Final answer
   x = 31,955.18