Finding the Fourth Proportional to 142,514.08, 196,677.12 and 78,854.56

Step by Step Solution

1. Step 1: Write the proportion equation
   142,514.08 : 196,677.12 = 78,854.56 : x
2. Step 2: Convert to fraction form
   142,514.08/196,677.12 = 78,854.56/x
3. Step 3: Cross multiply
   142,514.08x = 196,677.12 × 78,854.56
4. Step 4: Simplify right side
   142,514.08x = 15,508,887,759.67
5. Step 5: Solve for x
   x = 15,508,887,759.67/142,514.08
6. Step 6: Final answer
   x = 108,823.55