Finding the Fourth Proportional to 42,942.84, 64,453.92 and 30,947.46

Step by Step Solution

1. Step 1: Write the proportion equation
   42,942.84 : 64,453.92 = 30,947.46 : x
2. Step 2: Convert to fraction form
   42,942.84/64,453.92 = 30,947.46/x
3. Step 3: Cross multiply
   42,942.84x = 64,453.92 × 30,947.46
4. Step 4: Simplify right side
   42,942.84x = 1,994,685,111.04
5. Step 5: Solve for x
   x = 1,994,685,111.04/42,942.84
6. Step 6: Final answer
   x = 46,449.77