Finding the Fourth Proportional to 354,788.80, 532,339.05 and 186,269.98

Step by Step Solution

1. Step 1: Write the proportion equation
   354,788.80 : 532,339.05 = 186,269.98 : x
2. Step 2: Convert to fraction form
   354,788.80/532,339.05 = 186,269.98/x
3. Step 3: Cross multiply
   354,788.80x = 532,339.05 × 186,269.98
4. Step 4: Simplify right side
   354,788.80x = 99,158,784,196.72
5. Step 5: Solve for x
   x = 99,158,784,196.72/354,788.80
6. Step 6: Final answer
   x = 279,486.79