Finding the Fourth Proportional to 52,259.41, 72,116.79 and 28,385.56

Step by Step Solution

1. Step 1: Write the proportion equation
   52,259.41 : 72,116.79 = 28,385.56 : x
2. Step 2: Convert to fraction form
   52,259.41/72,116.79 = 28,385.56/x
3. Step 3: Cross multiply
   52,259.41x = 72,116.79 × 28,385.56
4. Step 4: Simplify right side
   52,259.41x = 2,047,075,469.55
5. Step 5: Solve for x
   x = 2,047,075,469.55/52,259.41
6. Step 6: Final answer
   x = 39,171.42