Finding the Fourth Proportional to 209,156.16, 288,634.71 and 118,529.38

Step by Step Solution

1. Step 1: Write the proportion equation
   209,156.16 : 288,634.71 = 118,529.38 : x
2. Step 2: Convert to fraction form
   209,156.16/288,634.71 = 118,529.38/x
3. Step 3: Cross multiply
   209,156.16x = 288,634.71 × 118,529.38
4. Step 4: Simplify right side
   209,156.16x = 34,211,693,222.78
5. Step 5: Solve for x
   x = 34,211,693,222.78/209,156.16
6. Step 6: Final answer
   x = 163,570.10