Finding the Fourth Proportional to 72,129.98, 99,537.91 and 43,844.78

Step by Step Solution

1. Step 1: Write the proportion equation
   72,129.98 : 99,537.91 = 43,844.78 : x
2. Step 2: Convert to fraction form
   72,129.98/99,537.91 = 43,844.78/x
3. Step 3: Cross multiply
   72,129.98x = 99,537.91 × 43,844.78
4. Step 4: Simplify right side
   72,129.98x = 4,364,217,158.31
5. Step 5: Solve for x
   x = 4,364,217,158.31/72,129.98
6. Step 6: Final answer
   x = 60,504.90