Finding the Fourth Proportional to 47,172.16, 65,105.94 and 28,310.50

Step by Step Solution

1. Step 1: Write the proportion equation
   47,172.16 : 65,105.94 = 28,310.50 : x
2. Step 2: Convert to fraction form
   47,172.16/65,105.94 = 28,310.50/x
3. Step 3: Cross multiply
   47,172.16x = 65,105.94 × 28,310.50
4. Step 4: Simplify right side
   47,172.16x = 1,843,181,714.37
5. Step 5: Solve for x
   x = 1,843,181,714.37/47,172.16
6. Step 6: Final answer
   x = 39,073.51