Finding the Fourth Proportional to 78,930.50, 118,928.59 and 65,198.16

Step by Step Solution

1. Step 1: Write the proportion equation
   78,930.50 : 118,928.59 = 65,198.16 : x
2. Step 2: Convert to fraction form
   78,930.50/118,928.59 = 65,198.16/x
3. Step 3: Cross multiply
   78,930.50x = 118,928.59 × 65,198.16
4. Step 4: Simplify right side
   78,930.50x = 7,753,925,239.39
5. Step 5: Solve for x
   x = 7,753,925,239.39/78,930.50
6. Step 6: Final answer
   x = 98,237.38