Finding the Fourth Proportional to 76,910.56, 106,136.38 and 42,918.69

Step by Step Solution

1. Step 1: Write the proportion equation
   76,910.56 : 106,136.38 = 42,918.69 : x
2. Step 2: Convert to fraction form
   76,910.56/106,136.38 = 42,918.69/x
3. Step 3: Cross multiply
   76,910.56x = 106,136.38 × 42,918.69
4. Step 4: Simplify right side
   76,910.56x = 4,555,233,645.67
5. Step 5: Solve for x
   x = 4,555,233,645.67/76,910.56
6. Step 6: Final answer
   x = 59,227.67