Finding the Fourth Proportional to 114,943.25, 172,190.71 and 64,871.89

Step by Step Solution

1. Step 1: Write the proportion equation
   114,943.25 : 172,190.71 = 64,871.89 : x
2. Step 2: Convert to fraction form
   114,943.25/172,190.71 = 64,871.89/x
3. Step 3: Cross multiply
   114,943.25x = 172,190.71 × 64,871.89
4. Step 4: Simplify right side
   114,943.25x = 11,170,336,448.76
5. Step 5: Solve for x
   x = 11,170,336,448.76/114,943.25
6. Step 6: Final answer
   x = 97,181.32