Finding the Fourth Proportional to 65,436.84, 98,081.64 and 27,978.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,436.84 : 98,081.64 = 27,978.12 : x
2. Step 2: Convert to fraction form
   65,436.84/98,081.64 = 27,978.12/x
3. Step 3: Cross multiply
   65,436.84x = 98,081.64 × 27,978.12
4. Step 4: Simplify right side
   65,436.84x = 2,744,139,893.72
5. Step 5: Solve for x
   x = 2,744,139,893.72/65,436.84
6. Step 6: Final answer
   x = 41,935.70