Finding the Fourth Proportional to 284,185.72, 392,179.53 and 156,861.37

Step by Step Solution

1. Step 1: Write the proportion equation
   284,185.72 : 392,179.53 = 156,861.37 : x
2. Step 2: Convert to fraction form
   284,185.72/392,179.53 = 156,861.37/x
3. Step 3: Cross multiply
   284,185.72x = 392,179.53 × 156,861.37
4. Step 4: Simplify right side
   284,185.72x = 61,517,818,361.76
5. Step 5: Solve for x
   x = 61,517,818,361.76/284,185.72
6. Step 6: Final answer
   x = 216,470.48