Finding the Fourth Proportional to 53,559.71, 79,860.72 and 52,088.39

Step by Step Solution

1. Step 1: Write the proportion equation
   53,559.71 : 79,860.72 = 52,088.39 : x
2. Step 2: Convert to fraction form
   53,559.71/79,860.72 = 52,088.39/x
3. Step 3: Cross multiply
   53,559.71x = 79,860.72 × 52,088.39
4. Step 4: Simplify right side
   53,559.71x = 4,159,816,329.04
5. Step 5: Solve for x
   x = 4,159,816,329.04/53,559.71
6. Step 6: Final answer
   x = 77,666.89