Finding the Fourth Proportional to 78,168.36, 107,872.71 and 42,358.36

Step by Step Solution

1. Step 1: Write the proportion equation
   78,168.36 : 107,872.71 = 42,358.36 : x
2. Step 2: Convert to fraction form
   78,168.36/107,872.71 = 42,358.36/x
3. Step 3: Cross multiply
   78,168.36x = 107,872.71 × 42,358.36
4. Step 4: Simplify right side
   78,168.36x = 4,569,311,084.36
5. Step 5: Solve for x
   x = 4,569,311,084.36/78,168.36
6. Step 6: Final answer
   x = 58,454.74