Finding the Fourth Proportional to 76,394.58, 105,422.88 and 42,401.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,394.58 : 105,422.88 = 42,401.08 : x
2. Step 2: Convert to fraction form
   76,394.58/105,422.88 = 42,401.08/x
3. Step 3: Cross multiply
   76,394.58x = 105,422.88 × 42,401.08
4. Step 4: Simplify right side
   76,394.58x = 4,470,043,968.71
5. Step 5: Solve for x
   x = 4,470,043,968.71/76,394.58
6. Step 6: Final answer
   x = 58,512.58