Finding the Fourth Proportional to 113,142.35, 156,119.11 and 65,386.49

Step by Step Solution

1. Step 1: Write the proportion equation
   113,142.35 : 156,119.11 = 65,386.49 : x
2. Step 2: Convert to fraction form
   113,142.35/156,119.11 = 65,386.49/x
3. Step 3: Cross multiply
   113,142.35x = 156,119.11 × 65,386.49
4. Step 4: Simplify right side
   113,142.35x = 10,208,079,680.76
5. Step 5: Solve for x
   x = 10,208,079,680.76/113,142.35
6. Step 6: Final answer
   x = 90,223.33