Finding the Fourth Proportional to 35,142.42, 52,705.35 and 12,943.74

Step by Step Solution

1. Step 1: Write the proportion equation
   35,142.42 : 52,705.35 = 12,943.74 : x
2. Step 2: Convert to fraction form
   35,142.42/52,705.35 = 12,943.74/x
3. Step 3: Cross multiply
   35,142.42x = 52,705.35 × 12,943.74
4. Step 4: Simplify right side
   35,142.42x = 682,204,347.01
5. Step 5: Solve for x
   x = 682,204,347.01/35,142.42
6. Step 6: Final answer
   x = 19,412.56