Finding the Fourth Proportional to 42,947.16, 64,439.10 and 22,185.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,947.16 : 64,439.10 = 22,185.24 : x
2. Step 2: Convert to fraction form
   42,947.16/64,439.10 = 22,185.24/x
3. Step 3: Cross multiply
   42,947.16x = 64,439.10 × 22,185.24
4. Step 4: Simplify right side
   42,947.16x = 1,429,596,898.88
5. Step 5: Solve for x
   x = 1,429,596,898.88/42,947.16
6. Step 6: Final answer
   x = 33,287.34