Finding the Fourth Proportional to 143,404.38, 197,902.84 and 78,876.34

Step by Step Solution

1. Step 1: Write the proportion equation
   143,404.38 : 197,902.84 = 78,876.34 : x
2. Step 2: Convert to fraction form
   143,404.38/197,902.84 = 78,876.34/x
3. Step 3: Cross multiply
   143,404.38x = 197,902.84 × 78,876.34
4. Step 4: Simplify right side
   143,404.38x = 15,609,851,002.86
5. Step 5: Solve for x
   x = 15,609,851,002.86/143,404.38
6. Step 6: Final answer
   x = 108,851.98