Finding the Fourth Proportional to 380,951.71, 525,714.10 and 211,185.83

Step by Step Solution

1. Step 1: Write the proportion equation
   380,951.71 : 525,714.10 = 211,185.83 : x
2. Step 2: Convert to fraction form
   380,951.71/525,714.10 = 211,185.83/x
3. Step 3: Cross multiply
   380,951.71x = 525,714.10 × 211,185.83
4. Step 4: Simplify right side
   380,951.71x = 111,023,369,337.52
5. Step 5: Solve for x
   x = 111,023,369,337.52/380,951.71
6. Step 6: Final answer
   x = 291,436.86