Finding the Fourth Proportional to 213,171.83, 294,175.69 and 117,678.50

Step by Step Solution

1. Step 1: Write the proportion equation
   213,171.83 : 294,175.69 = 117,678.50 : x
2. Step 2: Convert to fraction form
   213,171.83/294,175.69 = 117,678.50/x
3. Step 3: Cross multiply
   213,171.83x = 294,175.69 × 117,678.50
4. Step 4: Simplify right side
   213,171.83x = 34,618,152,170.59
5. Step 5: Solve for x
   x = 34,618,152,170.59/213,171.83
6. Step 6: Final answer
   x = 162,395.53