Finding the Fourth Proportional to 42,774.86, 64,119.23 and 17,828.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,774.86 : 64,119.23 = 17,828.72 : x
2. Step 2: Convert to fraction form
   42,774.86/64,119.23 = 17,828.72/x
3. Step 3: Cross multiply
   42,774.86x = 64,119.23 × 17,828.72
4. Step 4: Simplify right side
   42,774.86x = 1,143,163,682.56
5. Step 5: Solve for x
   x = 1,143,163,682.56/42,774.86
6. Step 6: Final answer
   x = 26,725.13