Finding the Fourth Proportional to 96,556.41, 144,845.55 and 86,634.72

Step by Step Solution

1. Step 1: Write the proportion equation
   96,556.41 : 144,845.55 = 86,634.72 : x
2. Step 2: Convert to fraction form
   96,556.41/144,845.55 = 86,634.72/x
3. Step 3: Cross multiply
   96,556.41x = 144,845.55 × 86,634.72
4. Step 4: Simplify right side
   96,556.41x = 12,548,653,667.50
5. Step 5: Solve for x
   x = 12,548,653,667.50/96,556.41
6. Step 6: Final answer
   x = 129,961.89