Finding the Fourth Proportional to 30,925.39, 42,677.28 and 16,778.35

Step by Step Solution

1. Step 1: Write the proportion equation
   30,925.39 : 42,677.28 = 16,778.35 : x
2. Step 2: Convert to fraction form
   30,925.39/42,677.28 = 16,778.35/x
3. Step 3: Cross multiply
   30,925.39x = 42,677.28 × 16,778.35
4. Step 4: Simplify right side
   30,925.39x = 716,054,340.89
5. Step 5: Solve for x
   x = 716,054,340.89/30,925.39
6. Step 6: Final answer
   x = 23,154.25