Finding the Fourth Proportional to 67,921.47, 93,786.66 and 42,457.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,921.47 : 93,786.66 = 42,457.50 : x
2. Step 2: Convert to fraction form
   67,921.47/93,786.66 = 42,457.50/x
3. Step 3: Cross multiply
   67,921.47x = 93,786.66 × 42,457.50
4. Step 4: Simplify right side
   67,921.47x = 3,981,947,116.95
5. Step 5: Solve for x
   x = 3,981,947,116.95/67,921.47
6. Step 6: Final answer
   x = 58,625.75