Finding the Fourth Proportional to 35,109.57, 48,439.37 and 19,991.54

Step by Step Solution

1. Step 1: Write the proportion equation
   35,109.57 : 48,439.37 = 19,991.54 : x
2. Step 2: Convert to fraction form
   35,109.57/48,439.37 = 19,991.54/x
3. Step 3: Cross multiply
   35,109.57x = 48,439.37 × 19,991.54
4. Step 4: Simplify right side
   35,109.57x = 968,377,410.71
5. Step 5: Solve for x
   x = 968,377,410.71/35,109.57
6. Step 6: Final answer
   x = 27,581.58