Finding the Fourth Proportional to 289,086.42, 433,814.71 and 156,059.31

Step by Step Solution

1. Step 1: Write the proportion equation
   289,086.42 : 433,814.71 = 156,059.31 : x
2. Step 2: Convert to fraction form
   289,086.42/433,814.71 = 156,059.31/x
3. Step 3: Cross multiply
   289,086.42x = 433,814.71 × 156,059.31
4. Step 4: Simplify right side
   289,086.42x = 67,700,824,310.45
5. Step 5: Solve for x
   x = 67,700,824,310.45/289,086.42
6. Step 6: Final answer
   x = 234,188.88