Finding the Fourth Proportional to 144,320, 216,289.92 and 61,111.04

Step by Step Solution

1. Step 1: Write the proportion equation
   144,320 : 216,289.92 = 61,111.04 : x
2. Step 2: Convert to fraction form
   144,320/216,289.92 = 61,111.04/x
3. Step 3: Cross multiply
   144,320x = 216,289.92 × 61,111.04
4. Step 4: Simplify right side
   144,320x = 13,217,701,952.72
5. Step 5: Solve for x
   x = 13,217,701,952.72/144,320
6. Step 6: Final answer
   x = 91,586.07