Finding the Fourth Proportional to 31,109.94, 42,931.62 and 16,962.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,109.94 : 42,931.62 = 16,962.75 : x
2. Step 2: Convert to fraction form
   31,109.94/42,931.62 = 16,962.75/x
3. Step 3: Cross multiply
   31,109.94x = 42,931.62 × 16,962.75
4. Step 4: Simplify right side
   31,109.94x = 728,238,337.16
5. Step 5: Solve for x
   x = 728,238,337.16/31,109.94
6. Step 6: Final answer
   x = 23,408.54