Finding the Fourth Proportional to 113,142.96, 156,119.94 and 65,387.10

Step by Step Solution

1. Step 1: Write the proportion equation
   113,142.96 : 156,119.94 = 65,387.10 : x
2. Step 2: Convert to fraction form
   113,142.96/156,119.94 = 65,387.10/x
3. Step 3: Cross multiply
   113,142.96x = 156,119.94 × 65,387.10
4. Step 4: Simplify right side
   113,142.96x = 10,208,229,788.53
5. Step 5: Solve for x
   x = 10,208,229,788.53/113,142.96
6. Step 6: Final answer
   x = 90,224.17