Finding the Fourth Proportional to 93,072.39, 139,608.60 and 65,047.18

Step by Step Solution

1. Step 1: Write the proportion equation
   93,072.39 : 139,608.60 = 65,047.18 : x
2. Step 2: Convert to fraction form
   93,072.39/139,608.60 = 65,047.18/x
3. Step 3: Cross multiply
   93,072.39x = 139,608.60 × 65,047.18
4. Step 4: Simplify right side
   93,072.39x = 9,081,145,733.75
5. Step 5: Solve for x
   x = 9,081,145,733.75/93,072.39
6. Step 6: Final answer
   x = 97,570.79