Finding the Fourth Proportional to 42,724.52, 64,031.04 and 30,918.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42,724.52 : 64,031.04 = 30,918.06 : x
2. Step 2: Convert to fraction form
   42,724.52/64,031.04 = 30,918.06/x
3. Step 3: Cross multiply
   42,724.52x = 64,031.04 × 30,918.06
4. Step 4: Simplify right side
   42,724.52x = 1,979,715,536.58
5. Step 5: Solve for x
   x = 1,979,715,536.58/42,724.52
6. Step 6: Final answer
   x = 46,336.75