Finding the Fourth Proportional to 78,749.94, 118,116.26 and 28,138.16

Step by Step Solution

1. Step 1: Write the proportion equation
   78,749.94 : 118,116.26 = 28,138.16 : x
2. Step 2: Convert to fraction form
   78,749.94/118,116.26 = 28,138.16/x
3. Step 3: Cross multiply
   78,749.94x = 118,116.26 × 28,138.16
4. Step 4: Simplify right side
   78,749.94x = 3,323,574,222.48
5. Step 5: Solve for x
   x = 3,323,574,222.48/78,749.94
6. Step 6: Final answer
   x = 42,204.15