Finding the Fourth Proportional to 78,749.91, 108,677.16 and 42,940.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,749.91 : 108,677.16 = 42,940.62 : x
2. Step 2: Convert to fraction form
   78,749.91/108,677.16 = 42,940.62/x
3. Step 3: Cross multiply
   78,749.91x = 108,677.16 × 42,940.62
4. Step 4: Simplify right side
   78,749.91x = 4,666,664,630.24
5. Step 5: Solve for x
   x = 4,666,664,630.24/78,749.91
6. Step 6: Final answer
   x = 59,259.30