Finding the Fourth Proportional to 113,142.69, 156,119.56 and 65,386.82

Step by Step Solution

1. Step 1: Write the proportion equation
   113,142.69 : 156,119.56 = 65,386.82 : x
2. Step 2: Convert to fraction form
   113,142.69/156,119.56 = 65,386.82/x
3. Step 3: Cross multiply
   113,142.69x = 156,119.56 × 65,386.82
4. Step 4: Simplify right side
   113,142.69x = 10,208,160,624.13
5. Step 5: Solve for x
   x = 10,208,160,624.13/113,142.69
6. Step 6: Final answer
   x = 90,223.78