Finding the Fourth Proportional to 85,817.72, 118,415.72 and 49,021.24

Step by Step Solution

1. Step 1: Write the proportion equation
   85,817.72 : 118,415.72 = 49,021.24 : x
2. Step 2: Convert to fraction form
   85,817.72/118,415.72 = 49,021.24/x
3. Step 3: Cross multiply
   85,817.72x = 118,415.72 × 49,021.24
4. Step 4: Simplify right side
   85,817.72x = 5,804,885,429.89
5. Step 5: Solve for x
   x = 5,804,885,429.89/85,817.72
6. Step 6: Final answer
   x = 67,642.04