Finding the Fourth Proportional to 52,259.72, 72,118.13 and 28,386.41

Step by Step Solution

1. Step 1: Write the proportion equation
   52,259.72 : 72,118.13 = 28,386.41 : x
2. Step 2: Convert to fraction form
   52,259.72/72,118.13 = 28,386.41/x
3. Step 3: Cross multiply
   52,259.72x = 72,118.13 × 28,386.41
4. Step 4: Simplify right side
   52,259.72x = 2,047,174,304.09
5. Step 5: Solve for x
   x = 2,047,174,304.09/52,259.72
6. Step 6: Final answer
   x = 39,173.09