Finding the Fourth Proportional to 30,926.53, 42,678.77 and 16,779.38

Step by Step Solution

1. Step 1: Write the proportion equation
   30,926.53 : 42,678.77 = 16,779.38 : x
2. Step 2: Convert to fraction form
   30,926.53/42,678.77 = 16,779.38/x
3. Step 3: Cross multiply
   30,926.53x = 42,678.77 × 16,779.38
4. Step 4: Simplify right side
   30,926.53x = 716,123,002.47
5. Step 5: Solve for x
   x = 716,123,002.47/30,926.53
6. Step 6: Final answer
   x = 23,155.62