Finding the Fourth Proportional to 143,320.67, 215,067.40 and 49,892.03

Step by Step Solution

1. Step 1: Write the proportion equation
   143,320.67 : 215,067.40 = 49,892.03 : x
2. Step 2: Convert to fraction form
   143,320.67/215,067.40 = 49,892.03/x
3. Step 3: Cross multiply
   143,320.67x = 215,067.40 × 49,892.03
4. Step 4: Simplify right side
   143,320.67x = 10,730,149,172.82
5. Step 5: Solve for x
   x = 10,730,149,172.82/143,320.67
6. Step 6: Final answer
   x = 74,868.12