Finding the Fourth Proportional to 392,971.52, 542,300.71 and 214,123.52

Step by Step Solution

1. Step 1: Write the proportion equation
   392,971.52 : 542,300.71 = 214,123.52 : x
2. Step 2: Convert to fraction form
   392,971.52/542,300.71 = 214,123.52/x
3. Step 3: Cross multiply
   392,971.52x = 542,300.71 × 214,123.52
4. Step 4: Simplify right side
   392,971.52x = 116,119,336,923.70
5. Step 5: Solve for x
   x = 116,119,336,923.70/392,971.52
6. Step 6: Final answer
   x = 295,490.46