Finding the Fourth Proportional to 204,490, 306,862.48 and 78,141.52

Step by Step Solution

1. Step 1: Write the proportion equation
   204,490 : 306,862.48 = 78,141.52 : x
2. Step 2: Convert to fraction form
   204,490/306,862.48 = 78,141.52/x
3. Step 3: Cross multiply
   204,490x = 306,862.48 × 78,141.52
4. Step 4: Simplify right side
   204,490x = 23,978,700,618.17
5. Step 5: Solve for x
   x = 23,978,700,618.17/204,490
6. Step 6: Final answer
   x = 117,260.99