Finding the Fourth Proportional to 71,020.67, 106,429.50 and 52,152.71

Step by Step Solution

1. Step 1: Write the proportion equation
   71,020.67 : 106,429.50 = 52,152.71 : x
2. Step 2: Convert to fraction form
   71,020.67/106,429.50 = 52,152.71/x
3. Step 3: Cross multiply
   71,020.67x = 106,429.50 × 52,152.71
4. Step 4: Simplify right side
   71,020.67x = 5,550,586,316.80
5. Step 5: Solve for x
   x = 5,550,586,316.80/71,020.67
6. Step 6: Final answer
   x = 78,154.52