Finding the Fourth Proportional to 381,834.50, 526,931.61 and 212,084.42

Step by Step Solution

1. Step 1: Write the proportion equation
   381,834.50 : 526,931.61 = 212,084.42 : x
2. Step 2: Convert to fraction form
   381,834.50/526,931.61 = 212,084.42/x
3. Step 3: Cross multiply
   381,834.50x = 526,931.61 × 212,084.42
4. Step 4: Simplify right side
   381,834.50x = 111,753,984,886.52
5. Step 5: Solve for x
   x = 111,753,984,886.52/381,834.50
6. Step 6: Final answer
   x = 292,676.50