Finding the Fourth Proportional to 77,369.25, 116,105.76 and 28,121.25

Step by Step Solution

1. Step 1: Write the proportion equation
   77,369.25 : 116,105.76 = 28,121.25 : x
2. Step 2: Convert to fraction form
   77,369.25/116,105.76 = 28,121.25/x
3. Step 3: Cross multiply
   77,369.25x = 116,105.76 × 28,121.25
4. Step 4: Simplify right side
   77,369.25x = 3,265,039,103.40
5. Step 5: Solve for x
   x = 3,265,039,103.40/77,369.25
6. Step 6: Final answer
   x = 42,200.73