Finding the Fourth Proportional to 144,259.02, 216,417.69 and 49,485.78

Step by Step Solution

1. Step 1: Write the proportion equation
   144,259.02 : 216,417.69 = 49,485.78 : x
2. Step 2: Convert to fraction form
   144,259.02/216,417.69 = 49,485.78/x
3. Step 3: Cross multiply
   144,259.02x = 216,417.69 × 49,485.78
4. Step 4: Simplify right side
   144,259.02x = 10,709,598,195.45
5. Step 5: Solve for x
   x = 10,709,598,195.45/144,259.02
6. Step 6: Final answer
   x = 74,238.67