Finding the Fourth Proportional to 213,136.73, 294,128.72 and 117,643.46

Step by Step Solution

1. Step 1: Write the proportion equation
   213,136.73 : 294,128.72 = 117,643.46 : x
2. Step 2: Convert to fraction form
   213,136.73/294,128.72 = 117,643.46/x
3. Step 3: Cross multiply
   213,136.73x = 294,128.72 × 117,643.46
4. Step 4: Simplify right side
   213,136.73x = 34,602,318,688.47
5. Step 5: Solve for x
   x = 34,602,318,688.47/213,136.73
6. Step 6: Final answer
   x = 162,347.98