Finding the Fourth Proportional to 142,123.77, 212,952.38 and 48,578.49

Step by Step Solution

1. Step 1: Write the proportion equation
   142,123.77 : 212,952.38 = 48,578.49 : x
2. Step 2: Convert to fraction form
   142,123.77/212,952.38 = 48,578.49/x
3. Step 3: Cross multiply
   142,123.77x = 212,952.38 × 48,578.49
4. Step 4: Simplify right side
   142,123.77x = 10,344,904,819.41
5. Step 5: Solve for x
   x = 10,344,904,819.41/142,123.77
6. Step 6: Final answer
   x = 72,788.00