Finding the Fourth Proportional to 42,857.20, 59,080.72 and 30,070.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,857.20 : 59,080.72 = 30,070.52 : x
2. Step 2: Convert to fraction form
   42,857.20/59,080.72 = 30,070.52/x
3. Step 3: Cross multiply
   42,857.20x = 59,080.72 × 30,070.52
4. Step 4: Simplify right side
   42,857.20x = 1,776,587,972.37
5. Step 5: Solve for x
   x = 1,776,587,972.37/42,857.20
6. Step 6: Final answer
   x = 41,453.66