Finding the Fourth Proportional to 76,008.50, 104,890.18 and 42,018.42

Step by Step Solution

1. Step 1: Write the proportion equation
   76,008.50 : 104,890.18 = 42,018.42 : x
2. Step 2: Convert to fraction form
   76,008.50/104,890.18 = 42,018.42/x
3. Step 3: Cross multiply
   76,008.50x = 104,890.18 × 42,018.42
4. Step 4: Simplify right side
   76,008.50x = 4,407,318,902.57
5. Step 5: Solve for x
   x = 4,407,318,902.57/76,008.50
6. Step 6: Final answer
   x = 57,984.56