Finding the Fourth Proportional to 209,111.29, 288,567.16 and 113,615.94

Step by Step Solution

1. Step 1: Write the proportion equation
   209,111.29 : 288,567.16 = 113,615.94 : x
2. Step 2: Convert to fraction form
   209,111.29/288,567.16 = 113,615.94/x
3. Step 3: Cross multiply
   209,111.29x = 288,567.16 × 113,615.94
4. Step 4: Simplify right side
   209,111.29x = 32,785,829,136.53
5. Step 5: Solve for x
   x = 32,785,829,136.53/209,111.29
6. Step 6: Final answer
   x = 156,786.51