Finding the Fourth Proportional to 42,018.22, 57,985.14 and 23,155.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,018.22 : 57,985.14 = 23,155.34 : x
2. Step 2: Convert to fraction form
   42,018.22/57,985.14 = 23,155.34/x
3. Step 3: Cross multiply
   42,018.22x = 57,985.14 × 23,155.34
4. Step 4: Simplify right side
   42,018.22x = 1,342,665,631.65
5. Step 5: Solve for x
   x = 1,342,665,631.65/42,018.22
6. Step 6: Final answer
   x = 31,954.37