Finding the Fourth Proportional to 139,034.88, 208,582.56 and 45,537.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,034.88 : 208,582.56 = 45,537.12 : x
2. Step 2: Convert to fraction form
   139,034.88/208,582.56 = 45,537.12/x
3. Step 3: Cross multiply
   139,034.88x = 208,582.56 × 45,537.12
4. Step 4: Simplify right side
   139,034.88x = 9,498,249,064.63
5. Step 5: Solve for x
   x = 9,498,249,064.63/139,034.88
6. Step 6: Final answer
   x = 68,315.58