Finding the Fourth Proportional to 115,820.56, 159,832.96 and 65,518.48

Step by Step Solution

1. Step 1: Write the proportion equation
   115,820.56 : 159,832.96 = 65,518.48 : x
2. Step 2: Convert to fraction form
   115,820.56/159,832.96 = 65,518.48/x
3. Step 3: Cross multiply
   115,820.56x = 159,832.96 × 65,518.48
4. Step 4: Simplify right side
   115,820.56x = 10,472,012,593.10
5. Step 5: Solve for x
   x = 10,472,012,593.10/115,820.56
6. Step 6: Final answer
   x = 90,415.83