Finding the Fourth Proportional to 113,336.76, 156,409.98 and 65,580.84

Step by Step Solution

1. Step 1: Write the proportion equation
   113,336.76 : 156,409.98 = 65,580.84 : x
2. Step 2: Convert to fraction form
   113,336.76/156,409.98 = 65,580.84/x
3. Step 3: Cross multiply
   113,336.76x = 156,409.98 × 65,580.84
4. Step 4: Simplify right side
   113,336.76x = 10,257,497,872.78
5. Step 5: Solve for x
   x = 10,257,497,872.78/113,336.76
6. Step 6: Final answer
   x = 90,504.60