Finding the Fourth Proportional to 115,019.94, 158,690.88 and 64,709.22

Step by Step Solution

1. Step 1: Write the proportion equation
   115,019.94 : 158,690.88 = 64,709.22 : x
2. Step 2: Convert to fraction form
   115,019.94/158,690.88 = 64,709.22/x
3. Step 3: Cross multiply
   115,019.94x = 158,690.88 × 64,709.22
4. Step 4: Simplify right side
   115,019.94x = 10,268,763,065.91
5. Step 5: Solve for x
   x = 10,268,763,065.91/115,019.94
6. Step 6: Final answer
   x = 89,278.11