Finding the Fourth Proportional to 115,345.50, 159,186.51 and 65,054.22

Step by Step Solution

1. Step 1: Write the proportion equation
   115,345.50 : 159,186.51 = 65,054.22 : x
2. Step 2: Convert to fraction form
   115,345.50/159,186.51 = 65,054.22/x
3. Step 3: Cross multiply
   115,345.50x = 159,186.51 × 65,054.22
4. Step 4: Simplify right side
   115,345.50x = 10,355,754,242.57
5. Step 5: Solve for x
   x = 10,355,754,242.57/115,345.50
6. Step 6: Final answer
   x = 89,780.31