Finding the Fourth Proportional to 144,056.95, 216,069.25 and 55,248.15

Step by Step Solution

1. Step 1: Write the proportion equation
   144,056.95 : 216,069.25 = 55,248.15 : x
2. Step 2: Convert to fraction form
   144,056.95/216,069.25 = 55,248.15/x
3. Step 3: Cross multiply
   144,056.95x = 216,069.25 × 55,248.15
4. Step 4: Simplify right side
   144,056.95x = 11,937,426,334.39
5. Step 5: Solve for x
   x = 11,937,426,334.39/144,056.95
6. Step 6: Final answer
   x = 82,866.02