Finding the Fourth Proportional to 76,665.69, 114,848.28 and 50,290.47

Step by Step Solution

1. Step 1: Write the proportion equation
   76,665.69 : 114,848.28 = 50,290.47 : x
2. Step 2: Convert to fraction form
   76,665.69/114,848.28 = 50,290.47/x
3. Step 3: Cross multiply
   76,665.69x = 114,848.28 × 50,290.47
4. Step 4: Simplify right side
   76,665.69x = 5,775,773,979.89
5. Step 5: Solve for x
   x = 5,775,773,979.89/76,665.69
6. Step 6: Final answer
   x = 75,337.14