Finding the Fourth Proportional to 78,196.92, 107,911.92 and 42,386.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,196.92 : 107,911.92 = 42,386.88 : x
2. Step 2: Convert to fraction form
   78,196.92/107,911.92 = 42,386.88/x
3. Step 3: Cross multiply
   78,196.92x = 107,911.92 × 42,386.88
4. Step 4: Simplify right side
   78,196.92x = 4,574,049,603.61
5. Step 5: Solve for x
   x = 4,574,049,603.61/78,196.92
6. Step 6: Final answer
   x = 58,493.99