Finding the Fourth Proportional to 42,956.34, 59,145.03 and 39,019.74

Step by Step Solution

1. Step 1: Write the proportion equation
   42,956.34 : 59,145.03 = 39,019.74 : x
2. Step 2: Convert to fraction form
   42,956.34/59,145.03 = 39,019.74/x
3. Step 3: Cross multiply
   42,956.34x = 59,145.03 × 39,019.74
4. Step 4: Simplify right side
   42,956.34x = 2,307,823,692.89
5. Step 5: Solve for x
   x = 2,307,823,692.89/42,956.34
6. Step 6: Final answer
   x = 53,724.87