Finding the Fourth Proportional to 155,684.72, 214,855.84 and 88,616.72

Step by Step Solution

1. Step 1: Write the proportion equation
   155,684.72 : 214,855.84 = 88,616.72 : x
2. Step 2: Convert to fraction form
   155,684.72/214,855.84 = 88,616.72/x
3. Step 3: Cross multiply
   155,684.72x = 214,855.84 × 88,616.72
4. Step 4: Simplify right side
   155,684.72x = 19,039,819,813.64
5. Step 5: Solve for x
   x = 19,039,819,813.64/155,684.72
6. Step 6: Final answer
   x = 122,297.29