Finding the Fourth Proportional to 42,726.04, 64,033.29 and 30,919.57

Step by Step Solution

1. Step 1: Write the proportion equation
   42,726.04 : 64,033.29 = 30,919.57 : x
2. Step 2: Convert to fraction form
   42,726.04/64,033.29 = 30,919.57/x
3. Step 3: Cross multiply
   42,726.04x = 64,033.29 × 30,919.57
4. Step 4: Simplify right side
   42,726.04x = 1,979,881,632.40
5. Step 5: Solve for x
   x = 1,979,881,632.40/42,726.04
6. Step 6: Final answer
   x = 46,338.99