Finding the Fourth Proportional to 132,641.69, 183,044.43 and 72,212.21

Step by Step Solution

1. Step 1: Write the proportion equation
   132,641.69 : 183,044.43 = 72,212.21 : x
2. Step 2: Convert to fraction form
   132,641.69/183,044.43 = 72,212.21/x
3. Step 3: Cross multiply
   132,641.69x = 183,044.43 × 72,212.21
4. Step 4: Simplify right side
   132,641.69x = 13,218,042,792.78
5. Step 5: Solve for x
   x = 13,218,042,792.78/132,641.69
6. Step 6: Final answer
   x = 99,652.25