Finding the Fourth Proportional to 47,390.97, 71,367.69 and 42,200.49

Step by Step Solution

1. Step 1: Write the proportion equation
   47,390.97 : 71,367.69 = 42,200.49 : x
2. Step 2: Convert to fraction form
   47,390.97/71,367.69 = 42,200.49/x
3. Step 3: Cross multiply
   47,390.97x = 71,367.69 × 42,200.49
4. Step 4: Simplify right side
   47,390.97x = 3,011,751,488.17
5. Step 5: Solve for x
   x = 3,011,751,488.17/47,390.97
6. Step 6: Final answer
   x = 63,551.17