Finding the Fourth Proportional to 70,009.86, 105,014.58 and 17,419.34

Step by Step Solution

1. Step 1: Write the proportion equation
   70,009.86 : 105,014.58 = 17,419.34 : x
2. Step 2: Convert to fraction form
   70,009.86/105,014.58 = 17,419.34/x
3. Step 3: Cross multiply
   70,009.86x = 105,014.58 × 17,419.34
4. Step 4: Simplify right side
   70,009.86x = 1,829,284,673.98
5. Step 5: Solve for x
   x = 1,829,284,673.98/70,009.86
6. Step 6: Final answer
   x = 26,128.96