Finding the Fourth Proportional to 83,721.82, 115,540.12 and 51,457.84

Step by Step Solution

1. Step 1: Write the proportion equation
   83,721.82 : 115,540.12 = 51,457.84 : x
2. Step 2: Convert to fraction form
   83,721.82/115,540.12 = 51,457.84/x
3. Step 3: Cross multiply
   83,721.82x = 115,540.12 × 51,457.84
4. Step 4: Simplify right side
   83,721.82x = 5,945,445,008.54
5. Step 5: Solve for x
   x = 5,945,445,008.54/83,721.82
6. Step 6: Final answer
   x = 71,014.28