Finding the Fourth Proportional to 52,658.67, 72,667.28 and 28,785.27

Step by Step Solution

1. Step 1: Write the proportion equation
   52,658.67 : 72,667.28 = 28,785.27 : x
2. Step 2: Convert to fraction form
   52,658.67/72,667.28 = 28,785.27/x
3. Step 3: Cross multiply
   52,658.67x = 72,667.28 × 28,785.27
4. Step 4: Simplify right side
   52,658.67x = 2,091,747,131.04
5. Step 5: Solve for x
   x = 2,091,747,131.04/52,658.67
6. Step 6: Final answer
   x = 39,722.75