Finding the Fourth Proportional to 139,080.64, 208,566.37 and 49,104.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,080.64 : 208,566.37 = 49,104.16 : x
2. Step 2: Convert to fraction form
   139,080.64/208,566.37 = 49,104.16/x
3. Step 3: Cross multiply
   139,080.64x = 208,566.37 × 49,104.16
4. Step 4: Simplify right side
   139,080.64x = 10,241,476,403.10
5. Step 5: Solve for x
   x = 10,241,476,403.10/139,080.64
6. Step 6: Final answer
   x = 73,636.97