Finding the Fourth Proportional to 115,328.64, 159,156.30 and 64,341

Step by Step Solution

1. Step 1: Write the proportion equation
   115,328.64 : 159,156.30 = 64,341 : x
2. Step 2: Convert to fraction form
   115,328.64/159,156.30 = 64,341/x
3. Step 3: Cross multiply
   115,328.64x = 159,156.30 × 64,341
4. Step 4: Simplify right side
   115,328.64x = 10,240,275,498.30
5. Step 5: Solve for x
   x = 10,240,275,498.30/115,328.64
6. Step 6: Final answer
   x = 88,792.13