Finding the Fourth Proportional to 143,443.74, 197,946.10 and 78,908.88

Step by Step Solution

1. Step 1: Write the proportion equation
   143,443.74 : 197,946.10 = 78,908.88 : x
2. Step 2: Convert to fraction form
   143,443.74/197,946.10 = 78,908.88/x
3. Step 3: Cross multiply
   143,443.74x = 197,946.10 × 78,908.88
4. Step 4: Simplify right side
   143,443.74x = 15,619,705,051.37
5. Step 5: Solve for x
   x = 15,619,705,051.37/143,443.74
6. Step 6: Final answer
   x = 108,890.81