Finding the Fourth Proportional to 139,347.17, 208,821.45 and 111,352.34

Step by Step Solution

1. Step 1: Write the proportion equation
   139,347.17 : 208,821.45 = 111,352.34 : x
2. Step 2: Convert to fraction form
   139,347.17/208,821.45 = 111,352.34/x
3. Step 3: Cross multiply
   139,347.17x = 208,821.45 × 111,352.34
4. Step 4: Simplify right side
   139,347.17x = 23,252,757,099.69
5. Step 5: Solve for x
   x = 23,252,757,099.69/139,347.17
6. Step 6: Final answer
   x = 166,869.25