Finding the Fourth Proportional to 144,391.86, 216,624.74 and 55,621.53

Step by Step Solution

1. Step 1: Write the proportion equation
   144,391.86 : 216,624.74 = 55,621.53 : x
2. Step 2: Convert to fraction form
   144,391.86/216,624.74 = 55,621.53/x
3. Step 3: Cross multiply
   144,391.86x = 216,624.74 × 55,621.53
4. Step 4: Simplify right side
   144,391.86x = 12,048,999,196.54
5. Step 5: Solve for x
   x = 12,048,999,196.54/144,391.86
6. Step 6: Final answer
   x = 83,446.53