Finding the Fourth Proportional to 139,082.62, 208,662.81 and 45,653.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,082.62 : 208,662.81 = 45,653.98 : x
2. Step 2: Convert to fraction form
   139,082.62/208,662.81 = 45,653.98/x
3. Step 3: Cross multiply
   139,082.62x = 208,662.81 × 45,653.98
4. Step 4: Simplify right side
   139,082.62x = 9,526,287,754.48
5. Step 5: Solve for x
   x = 9,526,287,754.48/139,082.62
6. Step 6: Final answer
   x = 68,493.73