Finding the Fourth Proportional to 136,404.78, 188,248.06 and 82,692.06

Step by Step Solution

1. Step 1: Write the proportion equation
   136,404.78 : 188,248.06 = 82,692.06 : x
2. Step 2: Convert to fraction form
   136,404.78/188,248.06 = 82,692.06/x
3. Step 3: Cross multiply
   136,404.78x = 188,248.06 × 82,692.06
4. Step 4: Simplify right side
   136,404.78x = 15,566,619,872.40
5. Step 5: Solve for x
   x = 15,566,619,872.40/136,404.78
6. Step 6: Final answer
   x = 114,120.78