Finding the Fourth Proportional to 139,037.04, 208,563.69 and 53,648.35

Step by Step Solution

1. Step 1: Write the proportion equation
   139,037.04 : 208,563.69 = 53,648.35 : x
2. Step 2: Convert to fraction form
   139,037.04/208,563.69 = 53,648.35/x
3. Step 3: Cross multiply
   139,037.04x = 208,563.69 × 53,648.35
4. Step 4: Simplify right side
   139,037.04x = 11,189,097,570.17
5. Step 5: Solve for x
   x = 11,189,097,570.17/139,037.04
6. Step 6: Final answer
   x = 80,475.66