Finding the Fourth Proportional to 139,892.24, 209,721.72 and 69,674.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,892.24 : 209,721.72 = 69,674.96 : x
2. Step 2: Convert to fraction form
   139,892.24/209,721.72 = 69,674.96/x
3. Step 3: Cross multiply
   139,892.24x = 209,721.72 × 69,674.96
4. Step 4: Simplify right side
   139,892.24x = 14,612,352,452.13
5. Step 5: Solve for x
   x = 14,612,352,452.13/139,892.24
6. Step 6: Final answer
   x = 104,454.35