Finding the Fourth Proportional to 52,642.02, 72,645.70 and 28,768.71

Step by Step Solution

1. Step 1: Write the proportion equation
   52,642.02 : 72,645.70 = 28,768.71 : x
2. Step 2: Convert to fraction form
   52,642.02/72,645.70 = 28,768.71/x
3. Step 3: Cross multiply
   52,642.02x = 72,645.70 × 28,768.71
4. Step 4: Simplify right side
   52,642.02x = 2,089,923,076.05
5. Step 5: Solve for x
   x = 2,089,923,076.05/52,642.02
6. Step 6: Final answer
   x = 39,700.66