Finding the Fourth Proportional to 78,478.05, 108,304.14 and 42,667.29

Step by Step Solution

1. Step 1: Write the proportion equation
   78,478.05 : 108,304.14 = 42,667.29 : x
2. Step 2: Convert to fraction form
   78,478.05/108,304.14 = 42,667.29/x
3. Step 3: Cross multiply
   78,478.05x = 108,304.14 × 42,667.29
4. Step 4: Simplify right side
   78,478.05x = 4,621,044,149.58
5. Step 5: Solve for x
   x = 4,621,044,149.58/78,478.05
6. Step 6: Final answer
   x = 58,883.27