Finding the Fourth Proportional to 139,073.76, 208,085.76 and 79,937.28

Step by Step Solution

1. Step 1: Write the proportion equation
   139,073.76 : 208,085.76 = 79,937.28 : x
2. Step 2: Convert to fraction form
   139,073.76/208,085.76 = 79,937.28/x
3. Step 3: Cross multiply
   139,073.76x = 208,085.76 × 79,937.28
4. Step 4: Simplify right side
   139,073.76x = 16,633,809,661.13
5. Step 5: Solve for x
   x = 16,633,809,661.13/139,073.76
6. Step 6: Final answer
   x = 119,604.23