Finding the Fourth Proportional to 74,015.30, 111,138.15 and 42,911.30

Step by Step Solution

1. Step 1: Write the proportion equation
   74,015.30 : 111,138.15 = 42,911.30 : x
2. Step 2: Convert to fraction form
   74,015.30/111,138.15 = 42,911.30/x
3. Step 3: Cross multiply
   74,015.30x = 111,138.15 × 42,911.30
4. Step 4: Simplify right side
   74,015.30x = 4,769,082,496.10
5. Step 5: Solve for x
   x = 4,769,082,496.10/74,015.30
6. Step 6: Final answer
   x = 64,433.74