Finding the Fourth Proportional to 113,218.56, 156,076.94 and 79,121.18

Step by Step Solution

1. Step 1: Write the proportion equation
   113,218.56 : 156,076.94 = 79,121.18 : x
2. Step 2: Convert to fraction form
   113,218.56/156,076.94 = 79,121.18/x
3. Step 3: Cross multiply
   113,218.56x = 156,076.94 × 79,121.18
4. Step 4: Simplify right side
   113,218.56x = 12,348,991,663.59
5. Step 5: Solve for x
   x = 12,348,991,663.59/113,218.56
6. Step 6: Final answer
   x = 109,072.15