Finding the Fourth Proportional to 76,396.67, 105,425.38 and 42,405.06

Step by Step Solution

1. Step 1: Write the proportion equation
   76,396.67 : 105,425.38 = 42,405.06 : x
2. Step 2: Convert to fraction form
   76,396.67/105,425.38 = 42,405.06/x
3. Step 3: Cross multiply
   76,396.67x = 105,425.38 × 42,405.06
4. Step 4: Simplify right side
   76,396.67x = 4,470,569,564.42
5. Step 5: Solve for x
   x = 4,470,569,564.42/76,396.67
6. Step 6: Final answer
   x = 58,517.86