Finding the Fourth Proportional to 209,013.37, 288,433.69 and 113,518.01

Step by Step Solution

1. Step 1: Write the proportion equation
   209,013.37 : 288,433.69 = 113,518.01 : x
2. Step 2: Convert to fraction form
   209,013.37/288,433.69 = 113,518.01/x
3. Step 3: Cross multiply
   209,013.37x = 288,433.69 × 113,518.01
4. Step 4: Simplify right side
   209,013.37x = 32,742,418,943.05
5. Step 5: Solve for x
   x = 32,742,418,943.05/209,013.37
6. Step 6: Final answer
   x = 156,652.27