Finding the Fourth Proportional to 143,423.72, 197,929.52 and 78,895.68

Step by Step Solution

1. Step 1: Write the proportion equation
   143,423.72 : 197,929.52 = 78,895.68 : x
2. Step 2: Convert to fraction form
   143,423.72/197,929.52 = 78,895.68/x
3. Step 3: Cross multiply
   143,423.72x = 197,929.52 × 78,895.68
4. Step 4: Simplify right side
   143,423.72x = 15,615,784,072.47
5. Step 5: Solve for x
   x = 15,615,784,072.47/143,423.72
6. Step 6: Final answer
   x = 108,878.67