Finding the Fourth Proportional to 47,109.12, 70,662.72 and 19,388.16

Step by Step Solution

1. Step 1: Write the proportion equation
   47,109.12 : 70,662.72 = 19,388.16 : x
2. Step 2: Convert to fraction form
   47,109.12/70,662.72 = 19,388.16/x
3. Step 3: Cross multiply
   47,109.12x = 70,662.72 × 19,388.16
4. Step 4: Simplify right side
   47,109.12x = 1,370,020,121.40
5. Step 5: Solve for x
   x = 1,370,020,121.40/47,109.12
6. Step 6: Final answer
   x = 29,081.84