Finding the Fourth Proportional to 78,802.70, 108,743.73 and 42,992.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,802.70 : 108,743.73 = 42,992.42 : x
2. Step 2: Convert to fraction form
   78,802.70/108,743.73 = 42,992.42/x
3. Step 3: Cross multiply
   78,802.70x = 108,743.73 × 42,992.42
4. Step 4: Simplify right side
   78,802.70x = 4,675,156,112.53
5. Step 5: Solve for x
   x = 4,675,156,112.53/78,802.70
6. Step 6: Final answer
   x = 59,327.36