Finding the Fourth Proportional to 78,618.43, 108,492.98 and 42,808.36

Step by Step Solution

1. Step 1: Write the proportion equation
   78,618.43 : 108,492.98 = 42,808.36 : x
2. Step 2: Convert to fraction form
   78,618.43/108,492.98 = 42,808.36/x
3. Step 3: Cross multiply
   78,618.43x = 108,492.98 × 42,808.36
4. Step 4: Simplify right side
   78,618.43x = 4,644,405,856.61
5. Step 5: Solve for x
   x = 4,644,405,856.61/78,618.43
6. Step 6: Final answer
   x = 59,075.28