Finding the Fourth Proportional to 31,033.60, 42,825.12 and 16,886.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,033.60 : 42,825.12 = 16,886.16 : x
2. Step 2: Convert to fraction form
   31,033.60/42,825.12 = 16,886.16/x
3. Step 3: Cross multiply
   31,033.60x = 42,825.12 × 16,886.16
4. Step 4: Simplify right side
   31,033.60x = 723,151,828.34
5. Step 5: Solve for x
   x = 723,151,828.34/31,033.60
6. Step 6: Final answer
   x = 23,302.22