Finding the Fourth Proportional to 78,616.24, 108,492.48 and 42,807.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,616.24 : 108,492.48 = 42,807.76 : x
2. Step 2: Convert to fraction form
   78,616.24/108,492.48 = 42,807.76/x
3. Step 3: Cross multiply
   78,616.24x = 108,492.48 × 42,807.76
4. Step 4: Simplify right side
   78,616.24x = 4,644,320,045.64
5. Step 5: Solve for x
   x = 4,644,320,045.64/78,616.24
6. Step 6: Final answer
   x = 59,075.84