Finding the Fourth Proportional to 71,961.40, 99,347.31 and 49,900.04

Step by Step Solution

1. Step 1: Write the proportion equation
   71,961.40 : 99,347.31 = 49,900.04 : x
2. Step 2: Convert to fraction form
   71,961.40/99,347.31 = 49,900.04/x
3. Step 3: Cross multiply
   71,961.40x = 99,347.31 × 49,900.04
4. Step 4: Simplify right side
   71,961.40x = 4,957,434,742.89
5. Step 5: Solve for x
   x = 4,957,434,742.89/71,961.40
6. Step 6: Final answer
   x = 68,890.19