Finding the Fourth Proportional to 52,013.34, 71,778.42 and 28,139.94

Step by Step Solution

1. Step 1: Write the proportion equation
   52,013.34 : 71,778.42 = 28,139.94 : x
2. Step 2: Convert to fraction form
   52,013.34/71,778.42 = 28,139.94/x
3. Step 3: Cross multiply
   52,013.34x = 71,778.42 × 28,139.94
4. Step 4: Simplify right side
   52,013.34x = 2,019,840,432.09
5. Step 5: Solve for x
   x = 2,019,840,432.09/52,013.34
6. Step 6: Final answer
   x = 38,833.12