Finding the Fourth Proportional to 115,808.91, 159,802.86 and 64,824.49

Step by Step Solution

1. Step 1: Write the proportion equation
   115,808.91 : 159,802.86 = 64,824.49 : x
2. Step 2: Convert to fraction form
   115,808.91/159,802.86 = 64,824.49/x
3. Step 3: Cross multiply
   115,808.91x = 159,802.86 × 64,824.49
4. Step 4: Simplify right side
   115,808.91x = 10,359,138,900.04
5. Step 5: Solve for x
   x = 10,359,138,900.04/115,808.91
6. Step 6: Final answer
   x = 89,450.28