Finding the Fourth Proportional to 35,938.45, 49,561.42 and 28,402.78

Step by Step Solution

1. Step 1: Write the proportion equation
   35,938.45 : 49,561.42 = 28,402.78 : x
2. Step 2: Convert to fraction form
   35,938.45/49,561.42 = 28,402.78/x
3. Step 3: Cross multiply
   35,938.45x = 49,561.42 × 28,402.78
4. Step 4: Simplify right side
   35,938.45x = 1,407,682,060.02
5. Step 5: Solve for x
   x = 1,407,682,060.02/35,938.45
6. Step 6: Final answer
   x = 39,169.25