Finding the Fourth Proportional to 35,499.27, 48,987.35 and 20,381.30

Step by Step Solution

1. Step 1: Write the proportion equation
   35,499.27 : 48,987.35 = 20,381.30 : x
2. Step 2: Convert to fraction form
   35,499.27/48,987.35 = 20,381.30/x
3. Step 3: Cross multiply
   35,499.27x = 48,987.35 × 20,381.30
4. Step 4: Simplify right side
   35,499.27x = 998,425,529.71
5. Step 5: Solve for x
   x = 998,425,529.71/35,499.27
6. Step 6: Final answer
   x = 28,125.24