Finding the Fourth Proportional to 115,573.62, 159,492.69 and 64,590.42

Step by Step Solution

1. Step 1: Write the proportion equation
   115,573.62 : 159,492.69 = 64,590.42 : x
2. Step 2: Convert to fraction form
   115,573.62/159,492.69 = 64,590.42/x
3. Step 3: Cross multiply
   115,573.62x = 159,492.69 × 64,590.42
4. Step 4: Simplify right side
   115,573.62x = 10,301,699,834.03
5. Step 5: Solve for x
   x = 10,301,699,834.03/115,573.62
6. Step 6: Final answer
   x = 89,135.39