Finding the Fourth Proportional to 30,738.29, 42,142.35 and 30,177.87

Step by Step Solution

1. Step 1: Write the proportion equation
   30,738.29 : 42,142.35 = 30,177.87 : x
2. Step 2: Convert to fraction form
   30,738.29/42,142.35 = 30,177.87/x
3. Step 3: Cross multiply
   30,738.29x = 42,142.35 × 30,177.87
4. Step 4: Simplify right side
   30,738.29x = 1,271,766,230.05
5. Step 5: Solve for x
   x = 1,271,766,230.05/30,738.29
6. Step 6: Final answer
   x = 41,374.01