Finding the Fourth Proportional to 114,689.69, 172,090.89 and 51,554.42

Step by Step Solution

1. Step 1: Write the proportion equation
   114,689.69 : 172,090.89 = 51,554.42 : x
2. Step 2: Convert to fraction form
   114,689.69/172,090.89 = 51,554.42/x
3. Step 3: Cross multiply
   114,689.69x = 172,090.89 × 51,554.42
4. Step 4: Simplify right side
   114,689.69x = 8,872,045,160.78
5. Step 5: Solve for x
   x = 8,872,045,160.78/114,689.69
6. Step 6: Final answer
   x = 77,356.96