Finding the Fourth Proportional to 115,499.58, 159,387.74 and 64,513.04

Step by Step Solution

1. Step 1: Write the proportion equation
   115,499.58 : 159,387.74 = 64,513.04 : x
2. Step 2: Convert to fraction form
   115,499.58/159,387.74 = 64,513.04/x
3. Step 3: Cross multiply
   115,499.58x = 159,387.74 × 64,513.04
4. Step 4: Simplify right side
   115,499.58x = 10,282,586,526.63
5. Step 5: Solve for x
   x = 10,282,586,526.63/115,499.58
6. Step 6: Final answer
   x = 89,027.05