Finding the Fourth Proportional to 113,591.58, 156,756.51 and 65,872.67

Step by Step Solution

1. Step 1: Write the proportion equation
   113,591.58 : 156,756.51 = 65,872.67 : x
2. Step 2: Convert to fraction form
   113,591.58/156,756.51 = 65,872.67/x
3. Step 3: Cross multiply
   113,591.58x = 156,756.51 × 65,872.67
4. Step 4: Simplify right side
   113,591.58x = 10,325,969,069.80
5. Step 5: Solve for x
   x = 10,325,969,069.80/113,591.58
6. Step 6: Final answer
   x = 90,904.35