Finding the Fourth Proportional to 142,271.19, 196,333.84 and 78,608.53

Step by Step Solution

1. Step 1: Write the proportion equation
   142,271.19 : 196,333.84 = 78,608.53 : x
2. Step 2: Convert to fraction form
   142,271.19/196,333.84 = 78,608.53/x
3. Step 3: Cross multiply
   142,271.19x = 196,333.84 × 78,608.53
4. Step 4: Simplify right side
   142,271.19x = 15,433,514,895.33
5. Step 5: Solve for x
   x = 15,433,514,895.33/142,271.19
6. Step 6: Final answer
   x = 108,479.55