Finding the Fourth Proportional to 143,988,450.89, 198,703,933.83 and 81,277,748.69

Step by Step Solution

1. Step 1: Write the proportion equation
   143,988,450.89 : 198,703,933.83 = 81,277,748.69 : x
2. Step 2: Convert to fraction form
   143,988,450.89/198,703,933.83 = 81,277,748.69/x
3. Step 3: Cross multiply
   143,988,450.89x = 198,703,933.83 × 81,277,748.69
4. Step 4: Simplify right side
   143,988,450.89x = 16,150,208,396,555,612
5. Step 5: Solve for x
   x = 16,150,208,396,555,612/143,988,450.89
6. Step 6: Final answer
   x = 112,163,220.71