Finding the Fourth Proportional to 284,527.89, 392,656.41 and 157,211.69

Step by Step Solution

1. Step 1: Write the proportion equation
   284,527.89 : 392,656.41 = 157,211.69 : x
2. Step 2: Convert to fraction form
   284,527.89/392,656.41 = 157,211.69/x
3. Step 3: Cross multiply
   284,527.89x = 392,656.41 × 157,211.69
4. Step 4: Simplify right side
   284,527.89x = 61,730,175,842.15
5. Step 5: Solve for x
   x = 61,730,175,842.15/284,527.89
6. Step 6: Final answer
   x = 216,956.50