Finding the Fourth Proportional to 143,622.29, 215,531.84 and 50,128.04

Step by Step Solution

1. Step 1: Write the proportion equation
   143,622.29 : 215,531.84 = 50,128.04 : x
2. Step 2: Convert to fraction form
   143,622.29/215,531.84 = 50,128.04/x
3. Step 3: Cross multiply
   143,622.29x = 215,531.84 × 50,128.04
4. Step 4: Simplify right side
   143,622.29x = 10,804,188,446.15
5. Step 5: Solve for x
   x = 10,804,188,446.15/143,622.29
6. Step 6: Final answer
   x = 75,226.40