Finding the Fourth Proportional to 49,764.05, 74,720.94 and 42,819.71

Step by Step Solution

1. Step 1: Write the proportion equation
   49,764.05 : 74,720.94 = 42,819.71 : x
2. Step 2: Convert to fraction form
   49,764.05/74,720.94 = 42,819.71/x
3. Step 3: Cross multiply
   49,764.05x = 74,720.94 × 42,819.71
4. Step 4: Simplify right side
   49,764.05x = 3,199,529,168.53
5. Step 5: Solve for x
   x = 3,199,529,168.53/49,764.05
6. Step 6: Final answer
   x = 64,293.99