Finding the Fourth Proportional to 42,607.40, 63,838.20 and 27,006.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,607.40 : 63,838.20 = 27,006.80 : x
2. Step 2: Convert to fraction form
   42,607.40/63,838.20 = 27,006.80/x
3. Step 3: Cross multiply
   42,607.40x = 63,838.20 × 27,006.80
4. Step 4: Simplify right side
   42,607.40x = 1,724,065,499.76
5. Step 5: Solve for x
   x = 1,724,065,499.76/42,607.40
6. Step 6: Final answer
   x = 40,463.99