Finding the Fourth Proportional to 30,935.89, 42,691.53 and 16,788.74

Step by Step Solution

1. Step 1: Write the proportion equation
   30,935.89 : 42,691.53 = 16,788.74 : x
2. Step 2: Convert to fraction form
   30,935.89/42,691.53 = 16,788.74/x
3. Step 3: Cross multiply
   30,935.89x = 42,691.53 × 16,788.74
4. Step 4: Simplify right side
   30,935.89x = 716,736,997.37
5. Step 5: Solve for x
   x = 716,736,997.37/30,935.89
6. Step 6: Final answer
   x = 23,168.46