Finding the Fourth Proportional to 51,769.49, 71,424.72 and 42,192.91

Step by Step Solution

1. Step 1: Write the proportion equation
   51,769.49 : 71,424.72 = 42,192.91 : x
2. Step 2: Convert to fraction form
   51,769.49/71,424.72 = 42,192.91/x
3. Step 3: Cross multiply
   51,769.49x = 71,424.72 × 42,192.91
4. Step 4: Simplify right side
   51,769.49x = 3,013,616,571.77
5. Step 5: Solve for x
   x = 3,013,616,571.77/51,769.49
6. Step 6: Final answer
   x = 58,212.21