Finding the Fourth Proportional to 139,079.64, 208,564.88 and 49,103.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,079.64 : 208,564.88 = 49,103.16 : x
2. Step 2: Convert to fraction form
   139,079.64/208,564.88 = 49,103.16/x
3. Step 3: Cross multiply
   139,079.64x = 208,564.88 × 49,103.16
4. Step 4: Simplify right side
   139,079.64x = 10,241,194,427.51
5. Step 5: Solve for x
   x = 10,241,194,427.51/139,079.64
6. Step 6: Final answer
   x = 73,635.47