Finding the Fourth Proportional to 209,145.06, 288,619.95 and 113,651.52

Step by Step Solution

1. Step 1: Write the proportion equation
   209,145.06 : 288,619.95 = 113,651.52 : x
2. Step 2: Convert to fraction form
   209,145.06/288,619.95 = 113,651.52/x
3. Step 3: Cross multiply
   209,145.06x = 288,619.95 × 113,651.52
4. Step 4: Simplify right side
   209,145.06x = 32,802,096,019.82
5. Step 5: Solve for x
   x = 32,802,096,019.82/209,145.06
6. Step 6: Final answer
   x = 156,838.97