Finding the Fourth Proportional to 142,300.08, 196,367.70 and 78,636.52

Step by Step Solution

1. Step 1: Write the proportion equation
   142,300.08 : 196,367.70 = 78,636.52 : x
2. Step 2: Convert to fraction form
   142,300.08/196,367.70 = 78,636.52/x
3. Step 3: Cross multiply
   142,300.08x = 196,367.70 × 78,636.52
4. Step 4: Simplify right side
   142,300.08x = 15,441,672,568.40
5. Step 5: Solve for x
   x = 15,441,672,568.40/142,300.08
6. Step 6: Final answer
   x = 108,514.86