Finding the Fourth Proportional to 35,233.94, 48,623.22 and 20,128.61

Step by Step Solution

1. Step 1: Write the proportion equation
   35,233.94 : 48,623.22 = 20,128.61 : x
2. Step 2: Convert to fraction form
   35,233.94/48,623.22 = 20,128.61/x
3. Step 3: Cross multiply
   35,233.94x = 48,623.22 × 20,128.61
4. Step 4: Simplify right side
   35,233.94x = 978,717,953.88
5. Step 5: Solve for x
   x = 978,717,953.88/35,233.94
6. Step 6: Final answer
   x = 27,777.70