Finding the Fourth Proportional to 52,111.74, 71,914.02 and 28,239

Step by Step Solution

1. Step 1: Write the proportion equation
   52,111.74 : 71,914.02 = 28,239 : x
2. Step 2: Convert to fraction form
   52,111.74/71,914.02 = 28,239/x
3. Step 3: Cross multiply
   52,111.74x = 71,914.02 × 28,239
4. Step 4: Simplify right side
   52,111.74x = 2,030,780,010.78
5. Step 5: Solve for x
   x = 2,030,780,010.78/52,111.74
6. Step 6: Final answer
   x = 38,969.72