Finding the Fourth Proportional to 31,030.31, 42,822.74 and 16,884.07

Step by Step Solution

1. Step 1: Write the proportion equation
   31,030.31 : 42,822.74 = 16,884.07 : x
2. Step 2: Convert to fraction form
   31,030.31/42,822.74 = 16,884.07/x
3. Step 3: Cross multiply
   31,030.31x = 42,822.74 × 16,884.07
4. Step 4: Simplify right side
   31,030.31x = 723,022,074.91
5. Step 5: Solve for x
   x = 723,022,074.91/31,030.31
6. Step 6: Final answer
   x = 23,300.51