Finding the Fourth Proportional to 78,454.29, 108,267.65 and 42,644.39

Step by Step Solution

1. Step 1: Write the proportion equation
   78,454.29 : 108,267.65 = 42,644.39 : x
2. Step 2: Convert to fraction form
   78,454.29/108,267.65 = 42,644.39/x
3. Step 3: Cross multiply
   78,454.29x = 108,267.65 × 42,644.39
4. Step 4: Simplify right side
   78,454.29x = 4,617,007,136.42
5. Step 5: Solve for x
   x = 4,617,007,136.42/78,454.29
6. Step 6: Final answer
   x = 58,849.65