Finding the Fourth Proportional to 76,077.42, 104,984.94 and 42,087.79

Step by Step Solution

1. Step 1: Write the proportion equation
   76,077.42 : 104,984.94 = 42,087.79 : x
2. Step 2: Convert to fraction form
   76,077.42/104,984.94 = 42,087.79/x
3. Step 3: Cross multiply
   76,077.42x = 104,984.94 × 42,087.79
4. Step 4: Simplify right side
   76,077.42x = 4,418,584,107.88
5. Step 5: Solve for x
   x = 4,418,584,107.88/76,077.42
6. Step 6: Final answer
   x = 58,080.10