Finding the Fourth Proportional to 42,778.44, 64,176.69 and 16,123.86

Step by Step Solution

1. Step 1: Write the proportion equation
   42,778.44 : 64,176.69 = 16,123.86 : x
2. Step 2: Convert to fraction form
   42,778.44/64,176.69 = 16,123.86/x
3. Step 3: Cross multiply
   42,778.44x = 64,176.69 × 16,123.86
4. Step 4: Simplify right side
   42,778.44x = 1,034,775,964.82
5. Step 5: Solve for x
   x = 1,034,775,964.82/42,778.44
6. Step 6: Final answer
   x = 24,189.19