Finding the Fourth Proportional to 113,515.56, 156,487.82 and 79,418.41

Step by Step Solution

1. Step 1: Write the proportion equation
   113,515.56 : 156,487.82 = 79,418.41 : x
2. Step 2: Convert to fraction form
   113,515.56/156,487.82 = 79,418.41/x
3. Step 3: Cross multiply
   113,515.56x = 156,487.82 × 79,418.41
4. Step 4: Simplify right side
   113,515.56x = 12,428,013,060.45
5. Step 5: Solve for x
   x = 12,428,013,060.45/113,515.56
6. Step 6: Final answer
   x = 109,482.90