Finding the Fourth Proportional to 432,429.82, 648,426.96 and 144,139.37

Step by Step Solution

1. Step 1: Write the proportion equation
   432,429.82 : 648,426.96 = 144,139.37 : x
2. Step 2: Convert to fraction form
   432,429.82/648,426.96 = 144,139.37/x
3. Step 3: Cross multiply
   432,429.82x = 648,426.96 × 144,139.37
4. Step 4: Simplify right side
   432,429.82x = 93,463,850,263.28
5. Step 5: Solve for x
   x = 93,463,850,263.28/432,429.82
6. Step 6: Final answer
   x = 216,136.46