Finding the Fourth Proportional to 139,364.84, 209,047.36 and 50,618.18

Step by Step Solution

1. Step 1: Write the proportion equation
   139,364.84 : 209,047.36 = 50,618.18 : x
2. Step 2: Convert to fraction form
   139,364.84/209,047.36 = 50,618.18/x
3. Step 3: Cross multiply
   139,364.84x = 209,047.36 × 50,618.18
4. Step 4: Simplify right side
   139,364.84x = 10,581,596,897.00
5. Step 5: Solve for x
   x = 10,581,596,897.00/139,364.84
6. Step 6: Final answer
   x = 75,927.31