Finding the Fourth Proportional to 115,023.30, 158,731.83 and 64,722.30

Step by Step Solution

1. Step 1: Write the proportion equation
   115,023.30 : 158,731.83 = 64,722.30 : x
2. Step 2: Convert to fraction form
   115,023.30/158,731.83 = 64,722.30/x
3. Step 3: Cross multiply
   115,023.30x = 158,731.83 × 64,722.30
4. Step 4: Simplify right side
   115,023.30x = 10,273,489,120.81
5. Step 5: Solve for x
   x = 10,273,489,120.81/115,023.30
6. Step 6: Final answer
   x = 89,316.59