Finding the Fourth Proportional to 35,520.93, 49,017.15 and 20,402.89

Step by Step Solution

1. Step 1: Write the proportion equation
   35,520.93 : 49,017.15 = 20,402.89 : x
2. Step 2: Convert to fraction form
   35,520.93/49,017.15 = 20,402.89/x
3. Step 3: Cross multiply
   35,520.93x = 49,017.15 × 20,402.89
4. Step 4: Simplify right side
   35,520.93x = 1,000,091,397.02
5. Step 5: Solve for x
   x = 1,000,091,397.02/35,520.93
6. Step 6: Final answer
   x = 28,154.99