Finding the Fourth Proportional to 342,645.72, 514,073.76 and 153,265.38

Step by Step Solution

1. Step 1: Write the proportion equation
   342,645.72 : 514,073.76 = 153,265.38 : x
2. Step 2: Convert to fraction form
   342,645.72/514,073.76 = 153,265.38/x
3. Step 3: Cross multiply
   342,645.72x = 514,073.76 × 153,265.38
4. Step 4: Simplify right side
   342,645.72x = 78,789,710,174.43
5. Step 5: Solve for x
   x = 78,789,710,174.43/342,645.72
6. Step 6: Final answer
   x = 229,945.12