Finding the Fourth Proportional to 143,435.40, 215,150.67 and 49,938.72

Step by Step Solution

1. Step 1: Write the proportion equation
   143,435.40 : 215,150.67 = 49,938.72 : x
2. Step 2: Convert to fraction form
   143,435.40/215,150.67 = 49,938.72/x
3. Step 3: Cross multiply
   143,435.40x = 215,150.67 × 49,938.72
4. Step 4: Simplify right side
   143,435.40x = 10,744,349,066.94
5. Step 5: Solve for x
   x = 10,744,349,066.94/143,435.40
6. Step 6: Final answer
   x = 74,907.23