Finding the Fourth Proportional to 72,891, 100,596.78 and 42,674.49

Step by Step Solution

1. Step 1: Write the proportion equation
   72,891 : 100,596.78 = 42,674.49 : x
2. Step 2: Convert to fraction form
   72,891/100,596.78 = 42,674.49/x
3. Step 3: Cross multiply
   72,891x = 100,596.78 × 42,674.49
4. Step 4: Simplify right side
   72,891x = 4,292,916,282.14
5. Step 5: Solve for x
   x = 4,292,916,282.14/72,891
6. Step 6: Final answer
   x = 58,895.01