Finding the Fourth Proportional to 256,019.57, 353,300.33 and 141,296.67

Step by Step Solution

1. Step 1: Write the proportion equation
   256,019.57 : 353,300.33 = 141,296.67 : x
2. Step 2: Convert to fraction form
   256,019.57/353,300.33 = 141,296.67/x
3. Step 3: Cross multiply
   256,019.57x = 353,300.33 × 141,296.67
4. Step 4: Simplify right side
   256,019.57x = 49,920,160,492.14
5. Step 5: Solve for x
   x = 49,920,160,492.14/256,019.57
6. Step 6: Final answer
   x = 194,985.72