Finding the Fourth Proportional to 78,715.47, 118,090.74 and 28,794.46

Step by Step Solution

1. Step 1: Write the proportion equation
   78,715.47 : 118,090.74 = 28,794.46 : x
2. Step 2: Convert to fraction form
   78,715.47/118,090.74 = 28,794.46/x
3. Step 3: Cross multiply
   78,715.47x = 118,090.74 × 28,794.46
4. Step 4: Simplify right side
   78,715.47x = 3,400,359,344.89
5. Step 5: Solve for x
   x = 3,400,359,344.89/78,715.47
6. Step 6: Final answer
   x = 43,198.11