Finding the Fourth Proportional to 71,412.69, 106,908.71 and 52,775.80

Step by Step Solution

1. Step 1: Write the proportion equation
   71,412.69 : 106,908.71 = 52,775.80 : x
2. Step 2: Convert to fraction form
   71,412.69/106,908.71 = 52,775.80/x
3. Step 3: Cross multiply
   71,412.69x = 106,908.71 × 52,775.80
4. Step 4: Simplify right side
   71,412.69x = 5,642,193,064.29
5. Step 5: Solve for x
   x = 5,642,193,064.29/71,412.69
6. Step 6: Final answer
   x = 79,008.27