Finding the Fourth Proportional to 42,018.85, 57,985.68 and 23,155.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42,018.85 : 57,985.68 = 23,155.96 : x
2. Step 2: Convert to fraction form
   42,018.85/57,985.68 = 23,155.96/x
3. Step 3: Cross multiply
   42,018.85x = 57,985.68 × 23,155.96
4. Step 4: Simplify right side
   42,018.85x = 1,342,714,086.65
5. Step 5: Solve for x
   x = 1,342,714,086.65/42,018.85
6. Step 6: Final answer
   x = 31,955.04