Finding the Fourth Proportional to 144,492.72, 216,757.54 and 55,771.60

Step by Step Solution

1. Step 1: Write the proportion equation
   144,492.72 : 216,757.54 = 55,771.60 : x
2. Step 2: Convert to fraction form
   144,492.72/216,757.54 = 55,771.60/x
3. Step 3: Cross multiply
   144,492.72x = 216,757.54 × 55,771.60
4. Step 4: Simplify right side
   144,492.72x = 12,088,915,053.95
5. Step 5: Solve for x
   x = 12,088,915,053.95/144,492.72
6. Step 6: Final answer
   x = 83,664.52