Finding the Fourth Proportional to 42,021.18, 62,787.96 and 31,822.47

Step by Step Solution

1. Step 1: Write the proportion equation
   42,021.18 : 62,787.96 = 31,822.47 : x
2. Step 2: Convert to fraction form
   42,021.18/62,787.96 = 31,822.47/x
3. Step 3: Cross multiply
   42,021.18x = 62,787.96 × 31,822.47
4. Step 4: Simplify right side
   42,021.18x = 1,998,067,973.46
5. Step 5: Solve for x
   x = 1,998,067,973.46/42,021.18
6. Step 6: Final answer
   x = 47,549.07