Finding the Fourth Proportional to 78,972.38, 108,911.34 and 65,522.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,972.38 : 108,911.34 = 65,522.34 : x
2. Step 2: Convert to fraction form
   78,972.38/108,911.34 = 65,522.34/x
3. Step 3: Cross multiply
   78,972.38x = 108,911.34 × 65,522.34
4. Step 4: Simplify right side
   78,972.38x = 7,136,125,849.34
5. Step 5: Solve for x
   x = 7,136,125,849.34/78,972.38
6. Step 6: Final answer
   x = 90,362.30