Finding the Fourth Proportional to 132,870.08, 183,361.78 and 72,441.16

Step by Step Solution

1. Step 1: Write the proportion equation
   132,870.08 : 183,361.78 = 72,441.16 : x
2. Step 2: Convert to fraction form
   132,870.08/183,361.78 = 72,441.16/x
3. Step 3: Cross multiply
   132,870.08x = 183,361.78 × 72,441.16
4. Step 4: Simplify right side
   132,870.08x = 13,282,940,910.16
5. Step 5: Solve for x
   x = 13,282,940,910.16/132,870.08
6. Step 6: Final answer
   x = 99,969.39