Finding the Fourth Proportional to 113,353.89, 170,029.68 and 42,274.05

Step by Step Solution

1. Step 1: Write the proportion equation
   113,353.89 : 170,029.68 = 42,274.05 : x
2. Step 2: Convert to fraction form
   113,353.89/170,029.68 = 42,274.05/x
3. Step 3: Cross multiply
   113,353.89x = 170,029.68 × 42,274.05
4. Step 4: Simplify right side
   113,353.89x = 7,187,843,193.80
5. Step 5: Solve for x
   x = 7,187,843,193.80/113,353.89
6. Step 6: Final answer
   x = 63,410.64