Finding the Fourth Proportional to 78,561.80, 117,772.84 and 28,632.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,561.80 : 117,772.84 = 28,632.52 : x
2. Step 2: Convert to fraction form
   78,561.80/117,772.84 = 28,632.52/x
3. Step 3: Cross multiply
   78,561.80x = 117,772.84 × 28,632.52
4. Step 4: Simplify right side
   78,561.80x = 3,372,133,196.76
5. Step 5: Solve for x
   x = 3,372,133,196.76/78,561.80
6. Step 6: Final answer
   x = 42,923.32