Finding the Fourth Proportional to 31,109.73, 42,931.31 and 16,962.57

Step by Step Solution

1. Step 1: Write the proportion equation
   31,109.73 : 42,931.31 = 16,962.57 : x
2. Step 2: Convert to fraction form
   31,109.73/42,931.31 = 16,962.57/x
3. Step 3: Cross multiply
   31,109.73x = 42,931.31 × 16,962.57
4. Step 4: Simplify right side
   31,109.73x = 728,225,351.07
5. Step 5: Solve for x
   x = 728,225,351.07/31,109.73
6. Step 6: Final answer
   x = 23,408.28