Finding the Fourth Proportional to 359,931, 496,704.82 and 209,037.72

Step by Step Solution

1. Step 1: Write the proportion equation
   359,931 : 496,704.82 = 209,037.72 : x
2. Step 2: Convert to fraction form
   359,931/496,704.82 = 209,037.72/x
3. Step 3: Cross multiply
   359,931x = 496,704.82 × 209,037.72
4. Step 4: Simplify right side
   359,931x = 103,830,043,085.81
5. Step 5: Solve for x
   x = 103,830,043,085.81/359,931
6. Step 6: Final answer
   x = 288,472.08