Finding the Fourth Proportional to 142,590.96, 196,774.56 and 78,927.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142,590.96 : 196,774.56 = 78,927.48 : x
2. Step 2: Convert to fraction form
   142,590.96/196,774.56 = 78,927.48/x
3. Step 3: Cross multiply
   142,590.96x = 196,774.56 × 78,927.48
4. Step 4: Simplify right side
   142,590.96x = 15,530,920,148.91
5. Step 5: Solve for x
   x = 15,530,920,148.91/142,590.96
6. Step 6: Final answer
   x = 108,919.39