Finding the Fourth Proportional to 35,498.27, 48,985.97 and 20,380.30

Step by Step Solution

1. Step 1: Write the proportion equation
   35,498.27 : 48,985.97 = 20,380.30 : x
2. Step 2: Convert to fraction form
   35,498.27/48,985.97 = 20,380.30/x
3. Step 3: Cross multiply
   35,498.27x = 48,985.97 × 20,380.30
4. Step 4: Simplify right side
   35,498.27x = 998,348,417.56
5. Step 5: Solve for x
   x = 998,348,417.56/35,498.27
6. Step 6: Final answer
   x = 28,123.86