Finding the Fourth Proportional to 42,726.56, 64,079.31 and 19,348.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,726.56 : 64,079.31 = 19,348.34 : x
2. Step 2: Convert to fraction form
   42,726.56/64,079.31 = 19,348.34/x
3. Step 3: Cross multiply
   42,726.56x = 64,079.31 × 19,348.34
4. Step 4: Simplify right side
   42,726.56x = 1,239,828,276.85
5. Step 5: Solve for x
   x = 1,239,828,276.85/42,726.56
6. Step 6: Final answer
   x = 29,017.74