Finding the Fourth Proportional to 113,200.56, 156,210.12 and 65,450.52

Step by Step Solution

1. Step 1: Write the proportion equation
   113,200.56 : 156,210.12 = 65,450.52 : x
2. Step 2: Convert to fraction form
   113,200.56/156,210.12 = 65,450.52/x
3. Step 3: Cross multiply
   113,200.56x = 156,210.12 × 65,450.52
4. Step 4: Simplify right side
   113,200.56x = 10,224,033,583.26
5. Step 5: Solve for x
   x = 10,224,033,583.26/113,200.56
6. Step 6: Final answer
   x = 90,317.87