Finding the Fourth Proportional to 139,304.82, 208,971.81 and 45,817.86

Step by Step Solution

1. Step 1: Write the proportion equation
   139,304.82 : 208,971.81 = 45,817.86 : x
2. Step 2: Convert to fraction form
   139,304.82/208,971.81 = 45,817.86/x
3. Step 3: Cross multiply
   139,304.82x = 208,971.81 × 45,817.86
4. Step 4: Simplify right side
   139,304.82x = 9,574,641,134.53
5. Step 5: Solve for x
   x = 9,574,641,134.53/139,304.82
6. Step 6: Final answer
   x = 68,731.59