Finding the Fourth Proportional to 113,600.10, 156,768.74 and 65,198.16

Step by Step Solution

1. Step 1: Write the proportion equation
   113,600.10 : 156,768.74 = 65,198.16 : x
2. Step 2: Convert to fraction form
   113,600.10/156,768.74 = 65,198.16/x
3. Step 3: Cross multiply
   113,600.10x = 156,768.74 × 65,198.16
4. Step 4: Simplify right side
   113,600.10x = 10,221,033,393.52
5. Step 5: Solve for x
   x = 10,221,033,393.52/113,600.10
6. Step 6: Final answer
   x = 89,973.81