Finding the Fourth Proportional to 42,883.08, 59,190.72 and 30,139.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,883.08 : 59,190.72 = 30,139.20 : x
2. Step 2: Convert to fraction form
   42,883.08/59,190.72 = 30,139.20/x
3. Step 3: Cross multiply
   42,883.08x = 59,190.72 × 30,139.20
4. Step 4: Simplify right side
   42,883.08x = 1,783,960,948.22
5. Step 5: Solve for x
   x = 1,783,960,948.22/42,883.08
6. Step 6: Final answer
   x = 41,600.58