Finding the Fourth Proportional to 213,517.30, 294,648.69 and 118,021.54

Step by Step Solution

1. Step 1: Write the proportion equation
   213,517.30 : 294,648.69 = 118,021.54 : x
2. Step 2: Convert to fraction form
   213,517.30/294,648.69 = 118,021.54/x
3. Step 3: Cross multiply
   213,517.30x = 294,648.69 × 118,021.54
4. Step 4: Simplify right side
   213,517.30x = 34,774,892,152.78
5. Step 5: Solve for x
   x = 34,774,892,152.78/213,517.30
6. Step 6: Final answer
   x = 162,866.86