Finding the Fourth Proportional to 78,976.01, 118,484.79 and 28,380.14

Step by Step Solution

1. Step 1: Write the proportion equation
   78,976.01 : 118,484.79 = 28,380.14 : x
2. Step 2: Convert to fraction form
   78,976.01/118,484.79 = 28,380.14/x
3. Step 3: Cross multiply
   78,976.01x = 118,484.79 × 28,380.14
4. Step 4: Simplify right side
   78,976.01x = 3,362,614,928.07
5. Step 5: Solve for x
   x = 3,362,614,928.07/78,976.01
6. Step 6: Final answer
   x = 42,577.68