Finding the Fourth Proportional to 31,109.18, 42,929.34 and 16,962.08

Step by Step Solution

1. Step 1: Write the proportion equation
   31,109.18 : 42,929.34 = 16,962.08 : x
2. Step 2: Convert to fraction form
   31,109.18/42,929.34 = 16,962.08/x
3. Step 3: Cross multiply
   31,109.18x = 42,929.34 × 16,962.08
4. Step 4: Simplify right side
   31,109.18x = 728,170,899.43
5. Step 5: Solve for x
   x = 728,170,899.43/31,109.18
6. Step 6: Final answer
   x = 23,406.95