Finding the Fourth Proportional to 113,115.88, 156,090.81 and 65,372.32

Step by Step Solution

1. Step 1: Write the proportion equation
   113,115.88 : 156,090.81 = 65,372.32 : x
2. Step 2: Convert to fraction form
   113,115.88/156,090.81 = 65,372.32/x
3. Step 3: Cross multiply
   113,115.88x = 156,090.81 × 65,372.32
4. Step 4: Simplify right side
   113,115.88x = 10,204,018,380.38
5. Step 5: Solve for x
   x = 10,204,018,380.38/113,115.88
6. Step 6: Final answer
   x = 90,208.54