Finding the Fourth Proportional to 115,445.90, 159,313.83 and 64,459.50

Step by Step Solution

1. Step 1: Write the proportion equation
   115,445.90 : 159,313.83 = 64,459.50 : x
2. Step 2: Convert to fraction form
   115,445.90/159,313.83 = 64,459.50/x
3. Step 3: Cross multiply
   115,445.90x = 159,313.83 × 64,459.50
4. Step 4: Simplify right side
   115,445.90x = 10,269,289,824.89
5. Step 5: Solve for x
   x = 10,269,289,824.89/115,445.90
6. Step 6: Final answer
   x = 88,953.27