Finding the Fourth Proportional to 139,322.88, 209,014.56 and 45,825.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,322.88 : 209,014.56 = 45,825.12 : x
2. Step 2: Convert to fraction form
   139,322.88/209,014.56 = 45,825.12/x
3. Step 3: Cross multiply
   139,322.88x = 209,014.56 × 45,825.12
4. Step 4: Simplify right side
   139,322.88x = 9,578,117,293.75
5. Step 5: Solve for x
   x = 9,578,117,293.75/139,322.88
6. Step 6: Final answer
   x = 68,747.63