Finding the Fourth Proportional to 39,215.61, 59,036.79 and 35,728.02

Step by Step Solution

1. Step 1: Write the proportion equation
   39,215.61 : 59,036.79 = 35,728.02 : x
2. Step 2: Convert to fraction form
   39,215.61/59,036.79 = 35,728.02/x
3. Step 3: Cross multiply
   39,215.61x = 59,036.79 × 35,728.02
4. Step 4: Simplify right side
   39,215.61x = 2,109,267,613.86
5. Step 5: Solve for x
   x = 2,109,267,613.86/39,215.61
6. Step 6: Final answer
   x = 53,786.43