Finding the Fourth Proportional to 78,414.28, 108,212.15 and 42,604.58

Step by Step Solution

1. Step 1: Write the proportion equation
   78,414.28 : 108,212.15 = 42,604.58 : x
2. Step 2: Convert to fraction form
   78,414.28/108,212.15 = 42,604.58/x
3. Step 3: Cross multiply
   78,414.28x = 108,212.15 × 42,604.58
4. Step 4: Simplify right side
   78,414.28x = 4,610,333,578.69
5. Step 5: Solve for x
   x = 4,610,333,578.69/78,414.28
6. Step 6: Final answer
   x = 58,794.57