Finding the Fourth Proportional to 113,536.98, 156,669.09 and 65,805.30

Step by Step Solution

1. Step 1: Write the proportion equation
   113,536.98 : 156,669.09 = 65,805.30 : x
2. Step 2: Convert to fraction form
   113,536.98/156,669.09 = 65,805.30/x
3. Step 3: Cross multiply
   113,536.98x = 156,669.09 × 65,805.30
4. Step 4: Simplify right side
   113,536.98x = 10,309,656,468.18
5. Step 5: Solve for x
   x = 10,309,656,468.18/113,536.98
6. Step 6: Final answer
   x = 90,804.39