Finding the Fourth Proportional to 42,702.30, 64,078.41 and 30,844.38

Step by Step Solution

1. Step 1: Write the proportion equation
   42,702.30 : 64,078.41 = 30,844.38 : x
2. Step 2: Convert to fraction form
   42,702.30/64,078.41 = 30,844.38/x
3. Step 3: Cross multiply
   42,702.30x = 64,078.41 × 30,844.38
4. Step 4: Simplify right side
   42,702.30x = 1,976,458,827.84
5. Step 5: Solve for x
   x = 1,976,458,827.84/42,702.30
6. Step 6: Final answer
   x = 46,284.60