Finding the Fourth Proportional to 113,659.84, 156,786.33 and 71,144.56

Step by Step Solution

1. Step 1: Write the proportion equation
   113,659.84 : 156,786.33 = 71,144.56 : x
2. Step 2: Convert to fraction form
   113,659.84/156,786.33 = 71,144.56/x
3. Step 3: Cross multiply
   113,659.84x = 156,786.33 × 71,144.56
4. Step 4: Simplify right side
   113,659.84x = 11,154,494,461.86
5. Step 5: Solve for x
   x = 11,154,494,461.86/113,659.84
6. Step 6: Final answer
   x = 98,139.28