Finding the Fourth Proportional to 328,561, 492,889.98 and 103,870.42

Step by Step Solution

1. Step 1: Write the proportion equation
   328,561 : 492,889.98 = 103,870.42 : x
2. Step 2: Convert to fraction form
   328,561/492,889.98 = 103,870.42/x
3. Step 3: Cross multiply
   328,561x = 492,889.98 × 103,870.42
4. Step 4: Simplify right side
   328,561x = 51,196,689,236.39
5. Step 5: Solve for x
   x = 51,196,689,236.39/328,561
6. Step 6: Final answer
   x = 155,820.96