Finding the Fourth Proportional to 78,526.66, 117,719.72 and 28,571.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,526.66 : 117,719.72 = 28,571.52 : x
2. Step 2: Convert to fraction form
   78,526.66/117,719.72 = 28,571.52/x
3. Step 3: Cross multiply
   78,526.66x = 117,719.72 × 28,571.52
4. Step 4: Simplify right side
   78,526.66x = 3,363,431,334.37
5. Step 5: Solve for x
   x = 3,363,431,334.37/78,526.66
6. Step 6: Final answer
   x = 42,831.71