Finding the Fourth Proportional to 70,461.72, 105,661.86 and 26,655

Step by Step Solution

1. Step 1: Write the proportion equation
   70,461.72 : 105,661.86 = 26,655 : x
2. Step 2: Convert to fraction form
   70,461.72/105,661.86 = 26,655/x
3. Step 3: Cross multiply
   70,461.72x = 105,661.86 × 26,655
4. Step 4: Simplify right side
   70,461.72x = 2,816,416,878.30
5. Step 5: Solve for x
   x = 2,816,416,878.30/70,461.72
6. Step 6: Final answer
   x = 39,970.88