Finding the Fourth Proportional to 78,968.79, 118,985.97 and 65,236.45

Step by Step Solution

1. Step 1: Write the proportion equation
   78,968.79 : 118,985.97 = 65,236.45 : x
2. Step 2: Convert to fraction form
   78,968.79/118,985.97 = 65,236.45/x
3. Step 3: Cross multiply
   78,968.79x = 118,985.97 × 65,236.45
4. Step 4: Simplify right side
   78,968.79x = 7,762,222,282.61
5. Step 5: Solve for x
   x = 7,762,222,282.61/78,968.79
6. Step 6: Final answer
   x = 98,294.82