Finding the Fourth Proportional to 113,115.98, 156,082.68 and 65,360.10

Step by Step Solution

1. Step 1: Write the proportion equation
   113,115.98 : 156,082.68 = 65,360.10 : x
2. Step 2: Convert to fraction form
   113,115.98/156,082.68 = 65,360.10/x
3. Step 3: Cross multiply
   113,115.98x = 156,082.68 × 65,360.10
4. Step 4: Simplify right side
   113,115.98x = 10,201,579,573.07
5. Step 5: Solve for x
   x = 10,201,579,573.07/113,115.98
6. Step 6: Final answer
   x = 90,186.90