Finding the Fourth Proportional to 149,581.31, 206,498.37 and 115,513.31

Step by Step Solution

1. Step 1: Write the proportion equation
   149,581.31 : 206,498.37 = 115,513.31 : x
2. Step 2: Convert to fraction form
   149,581.31/206,498.37 = 115,513.31/x
3. Step 3: Cross multiply
   149,581.31x = 206,498.37 × 115,513.31
4. Step 4: Simplify right side
   149,581.31x = 23,853,309,195.81
5. Step 5: Solve for x
   x = 23,853,309,195.81/149,581.31
6. Step 6: Final answer
   x = 159,467.18