Finding the Fourth Proportional to 42,726.52, 64,034.04 and 30,920.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42,726.52 : 64,034.04 = 30,920.06 : x
2. Step 2: Convert to fraction form
   42,726.52/64,034.04 = 30,920.06/x
3. Step 3: Cross multiply
   42,726.52x = 64,034.04 × 30,920.06
4. Step 4: Simplify right side
   42,726.52x = 1,979,936,358.84
5. Step 5: Solve for x
   x = 1,979,936,358.84/42,726.52
6. Step 6: Final answer
   x = 46,339.75