Finding the Fourth Proportional to 78,700.30, 118,062.06 and 28,768.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,700.30 : 118,062.06 = 28,768.72 : x
2. Step 2: Convert to fraction form
   78,700.30/118,062.06 = 28,768.72/x
3. Step 3: Cross multiply
   78,700.30x = 118,062.06 × 28,768.72
4. Step 4: Simplify right side
   78,700.30x = 3,396,494,346.76
5. Step 5: Solve for x
   x = 3,396,494,346.76/78,700.30
6. Step 6: Final answer
   x = 43,157.32