Finding the Fourth Proportional to 139,879.70, 209,881.56 and 73,304.00

Step by Step Solution

1. Step 1: Write the proportion equation
   139,879.70 : 209,881.56 = 73,304.00 : x
2. Step 2: Convert to fraction form
   139,879.70/209,881.56 = 73,304.00/x
3. Step 3: Cross multiply
   139,879.70x = 209,881.56 × 73,304.00
4. Step 4: Simplify right side
   139,879.70x = 15,385,156,824.83
5. Step 5: Solve for x
   x = 15,385,156,824.83/139,879.70
6. Step 6: Final answer
   x = 109,988.49