Finding the Fourth Proportional to 127,868.78, 176,424.29 and 72,677.34

Step by Step Solution

1. Step 1: Write the proportion equation
   127,868.78 : 176,424.29 = 72,677.34 : x
2. Step 2: Convert to fraction form
   127,868.78/176,424.29 = 72,677.34/x
3. Step 3: Cross multiply
   127,868.78x = 176,424.29 × 72,677.34
4. Step 4: Simplify right side
   127,868.78x = 12,822,048,108.59
5. Step 5: Solve for x
   x = 12,822,048,108.59/127,868.78
6. Step 6: Final answer
   x = 100,275.05