Finding the Fourth Proportional to 345,151.92, 517,851.72 and 134,940.72

Step by Step Solution

1. Step 1: Write the proportion equation
   345,151.92 : 517,851.72 = 134,940.72 : x
2. Step 2: Convert to fraction form
   345,151.92/517,851.72 = 134,940.72/x
3. Step 3: Cross multiply
   345,151.92x = 517,851.72 × 134,940.72
4. Step 4: Simplify right side
   345,151.92x = 69,879,283,950.04
5. Step 5: Solve for x
   x = 69,879,283,950.04/345,151.92
6. Step 6: Final answer
   x = 202,459.50