Finding the Fourth Proportional to 322,869.98, 445,780.06 and 202,060.10

Step by Step Solution

1. Step 1: Write the proportion equation
   322,869.98 : 445,780.06 = 202,060.10 : x
2. Step 2: Convert to fraction form
   322,869.98/445,780.06 = 202,060.10/x
3. Step 3: Cross multiply
   322,869.98x = 445,780.06 × 202,060.10
4. Step 4: Simplify right side
   322,869.98x = 90,074,363,501.61
5. Step 5: Solve for x
   x = 90,074,363,501.61/322,869.98
6. Step 6: Final answer
   x = 278,980.30