Finding the Fourth Proportional to 52,642.81, 72,647.27 and 28,769.48

Step by Step Solution

1. Step 1: Write the proportion equation
   52,642.81 : 72,647.27 = 28,769.48 : x
2. Step 2: Convert to fraction form
   52,642.81/72,647.27 = 28,769.48/x
3. Step 3: Cross multiply
   52,642.81x = 72,647.27 × 28,769.48
4. Step 4: Simplify right side
   52,642.81x = 2,090,024,181.32
5. Step 5: Solve for x
   x = 2,090,024,181.32/52,642.81
6. Step 6: Final answer
   x = 39,701.99