Finding the Fourth Proportional to 209,087.16, 288,541.35 and 113,594.10

Step by Step Solution

1. Step 1: Write the proportion equation
   209,087.16 : 288,541.35 = 113,594.10 : x
2. Step 2: Convert to fraction form
   209,087.16/288,541.35 = 113,594.10/x
3. Step 3: Cross multiply
   209,087.16x = 288,541.35 × 113,594.10
4. Step 4: Simplify right side
   209,087.16x = 32,776,594,966.04
5. Step 5: Solve for x
   x = 32,776,594,966.04/209,087.16
6. Step 6: Final answer
   x = 156,760.44