Finding the Fourth Proportional to 77,391.43, 116,087.17 and 51,090.02

Step by Step Solution

1. Step 1: Write the proportion equation
   77,391.43 : 116,087.17 = 51,090.02 : x
2. Step 2: Convert to fraction form
   77,391.43/116,087.17 = 51,090.02/x
3. Step 3: Cross multiply
   77,391.43x = 116,087.17 × 51,090.02
4. Step 4: Simplify right side
   77,391.43x = 5,930,895,999.54
5. Step 5: Solve for x
   x = 5,930,895,999.54/77,391.43
6. Step 6: Final answer
   x = 76,635.05