Finding the Fourth Proportional to 42,047.42, 58,029.54 and 31,418.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,047.42 : 58,029.54 = 31,418.60 : x
2. Step 2: Convert to fraction form
   42,047.42/58,029.54 = 31,418.60/x
3. Step 3: Cross multiply
   42,047.42x = 58,029.54 × 31,418.60
4. Step 4: Simplify right side
   42,047.42x = 1,823,206,905.44
5. Step 5: Solve for x
   x = 1,823,206,905.44/42,047.42
6. Step 6: Final answer
   x = 43,360.73