Finding the Fourth Proportional to 40,164.88, 60,267.98 and 19,128.78

Step by Step Solution

1. Step 1: Write the proportion equation
   40,164.88 : 60,267.98 = 19,128.78 : x
2. Step 2: Convert to fraction form
   40,164.88/60,267.98 = 19,128.78/x
3. Step 3: Cross multiply
   40,164.88x = 60,267.98 × 19,128.78
4. Step 4: Simplify right side
   40,164.88x = 1,152,852,930.46
5. Step 5: Solve for x
   x = 1,152,852,930.46/40,164.88
6. Step 6: Final answer
   x = 28,703.01