Finding the Fourth Proportional to 74,144.36, 111,216.59 and 42,759.59

Step by Step Solution

1. Step 1: Write the proportion equation
   74,144.36 : 111,216.59 = 42,759.59 : x
2. Step 2: Convert to fraction form
   74,144.36/111,216.59 = 42,759.59/x
3. Step 3: Cross multiply
   74,144.36x = 111,216.59 × 42,759.59
4. Step 4: Simplify right side
   74,144.36x = 4,755,575,575.80
5. Step 5: Solve for x
   x = 4,755,575,575.80/74,144.36
6. Step 6: Final answer
   x = 64,139.42