Finding the Fourth Proportional to 52,672.02, 72,685.86 and 28,798.20

Step by Step Solution

1. Step 1: Write the proportion equation
   52,672.02 : 72,685.86 = 28,798.20 : x
2. Step 2: Convert to fraction form
   52,672.02/72,685.86 = 28,798.20/x
3. Step 3: Cross multiply
   52,672.02x = 72,685.86 × 28,798.20
4. Step 4: Simplify right side
   52,672.02x = 2,093,221,933.45
5. Step 5: Solve for x
   x = 2,093,221,933.45/52,672.02
6. Step 6: Final answer
   x = 39,740.68