Finding the Fourth Proportional to 78,752.45, 108,679.32 and 42,942.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,752.45 : 108,679.32 = 42,942.15 : x
2. Step 2: Convert to fraction form
   78,752.45/108,679.32 = 42,942.15/x
3. Step 3: Cross multiply
   78,752.45x = 108,679.32 × 42,942.15
4. Step 4: Simplify right side
   78,752.45x = 4,666,923,661.34
5. Step 5: Solve for x
   x = 4,666,923,661.34/78,752.45
6. Step 6: Final answer
   x = 59,260.68