Finding the Fourth Proportional to 78,791.40, 108,733.59 and 42,982.65

Step by Step Solution

1. Step 1: Write the proportion equation
   78,791.40 : 108,733.59 = 42,982.65 : x
2. Step 2: Convert to fraction form
   78,791.40/108,733.59 = 42,982.65/x
3. Step 3: Cross multiply
   78,791.40x = 108,733.59 × 42,982.65
4. Step 4: Simplify right side
   78,791.40x = 4,673,657,842.21
5. Step 5: Solve for x
   x = 4,673,657,842.21/78,791.40
6. Step 6: Final answer
   x = 59,316.85