Finding the Fourth Proportional to 30,939.83, 42,697 and 16,792.67

Step by Step Solution

1. Step 1: Write the proportion equation
   30,939.83 : 42,697 = 16,792.67 : x
2. Step 2: Convert to fraction form
   30,939.83/42,697 = 16,792.67/x
3. Step 3: Cross multiply
   30,939.83x = 42,697 × 16,792.67
4. Step 4: Simplify right side
   30,939.83x = 716,996,417.51
5. Step 5: Solve for x
   x = 716,996,417.51/30,939.83
6. Step 6: Final answer
   x = 23,173.90