Finding the Fourth Proportional to 411,111.78, 616,674.50 and 144,875.52

Step by Step Solution

1. Step 1: Write the proportion equation
   411,111.78 : 616,674.50 = 144,875.52 : x
2. Step 2: Convert to fraction form
   411,111.78/616,674.50 = 144,875.52/x
3. Step 3: Cross multiply
   411,111.78x = 616,674.50 × 144,875.52
4. Step 4: Simplify right side
   411,111.78x = 89,341,038,858.24
5. Step 5: Solve for x
   x = 89,341,038,858.24/411,111.78
6. Step 6: Final answer
   x = 217,315.69