Finding the Fourth Proportional to 144,495.48, 216,689.45 and 49,699.05

Step by Step Solution

1. Step 1: Write the proportion equation
   144,495.48 : 216,689.45 = 49,699.05 : x
2. Step 2: Convert to fraction form
   144,495.48/216,689.45 = 49,699.05/x
3. Step 3: Cross multiply
   144,495.48x = 216,689.45 × 49,699.05
4. Step 4: Simplify right side
   144,495.48x = 10,769,259,810.02
5. Step 5: Solve for x
   x = 10,769,259,810.02/144,495.48
6. Step 6: Final answer
   x = 74,530.08