Finding the Fourth Proportional to 392,887, 542,184.06 and 214,039

Step by Step Solution

1. Step 1: Write the proportion equation
   392,887 : 542,184.06 = 214,039 : x
2. Step 2: Convert to fraction form
   392,887/542,184.06 = 214,039/x
3. Step 3: Cross multiply
   392,887x = 542,184.06 × 214,039
4. Step 4: Simplify right side
   392,887x = 116,048,534,018.34
5. Step 5: Solve for x
   x = 116,048,534,018.34/392,887
6. Step 6: Final answer
   x = 295,373.82