Finding the Fourth Proportional to 142,108.22, 196,108.93 and 78,445.56

Step by Step Solution

1. Step 1: Write the proportion equation
   142,108.22 : 196,108.93 = 78,445.56 : x
2. Step 2: Convert to fraction form
   142,108.22/196,108.93 = 78,445.56/x
3. Step 3: Cross multiply
   142,108.22x = 196,108.93 × 78,445.56
4. Step 4: Simplify right side
   142,108.22x = 15,383,875,668.32
5. Step 5: Solve for x
   x = 15,383,875,668.32/142,108.22
6. Step 6: Final answer
   x = 108,254.65