Finding the Fourth Proportional to 213,136.18, 294,127.94 and 117,642.89

Step by Step Solution

1. Step 1: Write the proportion equation
   213,136.18 : 294,127.94 = 117,642.89 : x
2. Step 2: Convert to fraction form
   213,136.18/294,127.94 = 117,642.89/x
3. Step 3: Cross multiply
   213,136.18x = 294,127.94 × 117,642.89
4. Step 4: Simplify right side
   213,136.18x = 34,602,061,920.77
5. Step 5: Solve for x
   x = 34,602,061,920.77/213,136.18
6. Step 6: Final answer
   x = 162,347.20