Finding the Fourth Proportional to 70,535.96, 105,804.56 and 17,945.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,535.96 : 105,804.56 = 17,945.50 : x
2. Step 2: Convert to fraction form
   70,535.96/105,804.56 = 17,945.50/x
3. Step 3: Cross multiply
   70,535.96x = 105,804.56 × 17,945.50
4. Step 4: Simplify right side
   70,535.96x = 1,898,715,731.48
5. Step 5: Solve for x
   x = 1,898,715,731.48/70,535.96
6. Step 6: Final answer
   x = 26,918.41