Finding the Fourth Proportional to 70,472.18, 105,640.50 and 26,086.88

Step by Step Solution

1. Step 1: Write the proportion equation
   70,472.18 : 105,640.50 = 26,086.88 : x
2. Step 2: Convert to fraction form
   70,472.18/105,640.50 = 26,086.88/x
3. Step 3: Cross multiply
   70,472.18x = 105,640.50 × 26,086.88
4. Step 4: Simplify right side
   70,472.18x = 2,755,831,046.64
5. Step 5: Solve for x
   x = 2,755,831,046.64/70,472.18
6. Step 6: Final answer
   x = 39,105.23