Finding the Fourth Proportional to 384,745, 530,938.20 and 214,980.52

Step by Step Solution

1. Step 1: Write the proportion equation
   384,745 : 530,938.20 = 214,980.52 : x
2. Step 2: Convert to fraction form
   384,745/530,938.20 = 214,980.52/x
3. Step 3: Cross multiply
   384,745x = 530,938.20 × 214,980.52
4. Step 4: Simplify right side
   384,745x = 114,141,370,323.86
5. Step 5: Solve for x
   x = 114,141,370,323.86/384,745
6. Step 6: Final answer
   x = 296,667.59