Finding the Fourth Proportional to 213,012.05, 293,951.71 and 117,518.72

Step by Step Solution

1. Step 1: Write the proportion equation
   213,012.05 : 293,951.71 = 117,518.72 : x
2. Step 2: Convert to fraction form
   213,012.05/293,951.71 = 117,518.72/x
3. Step 3: Cross multiply
   213,012.05x = 293,951.71 × 117,518.72
4. Step 4: Simplify right side
   213,012.05x = 34,544,828,701.01
5. Step 5: Solve for x
   x = 34,544,828,701.01/213,012.05
6. Step 6: Final answer
   x = 162,173.12