Finding the Fourth Proportional to 359,932, 496,706.20 and 209,038.72

Step by Step Solution

1. Step 1: Write the proportion equation
   359,932 : 496,706.20 = 209,038.72 : x
2. Step 2: Convert to fraction form
   359,932/496,706.20 = 209,038.72/x
3. Step 3: Cross multiply
   359,932x = 496,706.20 × 209,038.72
4. Step 4: Simplify right side
   359,932x = 103,830,828,264.06
5. Step 5: Solve for x
   x = 103,830,828,264.06/359,932
6. Step 6: Final answer
   x = 288,473.46