Finding the Fourth Proportional to 31,109.23, 42,930.62 and 16,962.07

Step by Step Solution

1. Step 1: Write the proportion equation
   31,109.23 : 42,930.62 = 16,962.07 : x
2. Step 2: Convert to fraction form
   31,109.23/42,930.62 = 16,962.07/x
3. Step 3: Cross multiply
   31,109.23x = 42,930.62 × 16,962.07
4. Step 4: Simplify right side
   31,109.23x = 728,192,181.58
5. Step 5: Solve for x
   x = 728,192,181.58/31,109.23
6. Step 6: Final answer
   x = 23,407.60