Finding the Fourth Proportional to 139,275.36, 208,868.72 and 45,759.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,275.36 : 208,868.72 = 45,759.52 : x
2. Step 2: Convert to fraction form
   139,275.36/208,868.72 = 45,759.52/x
3. Step 3: Cross multiply
   139,275.36x = 208,868.72 × 45,759.52
4. Step 4: Simplify right side
   139,275.36x = 9,557,732,370.21
5. Step 5: Solve for x
   x = 9,557,732,370.21/139,275.36
6. Step 6: Final answer
   x = 68,624.72