Finding the Fourth Proportional to 384,112.18, 530,074.71 and 212,030.08

Step by Step Solution

1. Step 1: Write the proportion equation
   384,112.18 : 530,074.71 = 212,030.08 : x
2. Step 2: Convert to fraction form
   384,112.18/530,074.71 = 212,030.08/x
3. Step 3: Cross multiply
   384,112.18x = 530,074.71 × 212,030.08
4. Step 4: Simplify right side
   384,112.18x = 112,391,783,167.28
5. Step 5: Solve for x
   x = 112,391,783,167.28/384,112.18
6. Step 6: Final answer
   x = 292,601.46