Finding the Fourth Proportional to 65,971.67, 98,979.42 and 43,872.08

Step by Step Solution

1. Step 1: Write the proportion equation
   65,971.67 : 98,979.42 = 43,872.08 : x
2. Step 2: Convert to fraction form
   65,971.67/98,979.42 = 43,872.08/x
3. Step 3: Cross multiply
   65,971.67x = 98,979.42 × 43,872.08
4. Step 4: Simplify right side
   65,971.67x = 4,342,433,032.59
5. Step 5: Solve for x
   x = 4,342,433,032.59/65,971.67
6. Step 6: Final answer
   x = 65,822.69