Finding the Fourth Proportional to 359,665.72, 539,498.40 and 106,945.12

Step by Step Solution

1. Step 1: Write the proportion equation
   359,665.72 : 539,498.40 = 106,945.12 : x
2. Step 2: Convert to fraction form
   359,665.72/539,498.40 = 106,945.12/x
3. Step 3: Cross multiply
   359,665.72x = 539,498.40 × 106,945.12
4. Step 4: Simplify right side
   359,665.72x = 57,696,721,127.81
5. Step 5: Solve for x
   x = 57,696,721,127.81/359,665.72
6. Step 6: Final answer
   x = 160,417.63