Finding the Fourth Proportional to 76,774, 105,948.30 and 43,240

Step by Step Solution

1. Step 1: Write the proportion equation
   76,774 : 105,948.30 = 43,240 : x
2. Step 2: Convert to fraction form
   76,774/105,948.30 = 43,240/x
3. Step 3: Cross multiply
   76,774x = 105,948.30 × 43,240
4. Step 4: Simplify right side
   76,774x = 4,581,204,492
5. Step 5: Solve for x
   x = 4,581,204,492/76,774
6. Step 6: Final answer
   x = 59,671.30