Finding the Fourth Proportional to 213,151.68, 294,156.72 and 117,661.92

Step by Step Solution

1. Step 1: Write the proportion equation
   213,151.68 : 294,156.72 = 117,661.92 : x
2. Step 2: Convert to fraction form
   213,151.68/294,156.72 = 117,661.92/x
3. Step 3: Cross multiply
   213,151.68x = 294,156.72 × 117,661.92
4. Step 4: Simplify right side
   213,151.68x = 34,611,044,456.10
5. Step 5: Solve for x
   x = 34,611,044,456.10/213,151.68
6. Step 6: Final answer
   x = 162,377.54