Finding the Fourth Proportional to 70,139.58, 105,209.30 and 17,549.02

Step by Step Solution

1. Step 1: Write the proportion equation
   70,139.58 : 105,209.30 = 17,549.02 : x
2. Step 2: Convert to fraction form
   70,139.58/105,209.30 = 17,549.02/x
3. Step 3: Cross multiply
   70,139.58x = 105,209.30 × 17,549.02
4. Step 4: Simplify right side
   70,139.58x = 1,846,320,109.89
5. Step 5: Solve for x
   x = 1,846,320,109.89/70,139.58
6. Step 6: Final answer
   x = 26,323.51