Finding the Fourth Proportional to 42,017.63, 57,985.54 and 23,155.97

Step by Step Solution

1. Step 1: Write the proportion equation
   42,017.63 : 57,985.54 = 23,155.97 : x
2. Step 2: Convert to fraction form
   42,017.63/57,985.54 = 23,155.97/x
3. Step 3: Cross multiply
   42,017.63x = 57,985.54 × 23,155.97
4. Step 4: Simplify right side
   42,017.63x = 1,342,711,076.86
5. Step 5: Solve for x
   x = 1,342,711,076.86/42,017.63
6. Step 6: Final answer
   x = 31,955.90