Finding the Fourth Proportional to 189,008.50, 283,414.31 and 89,141.88

Step by Step Solution

1. Step 1: Write the proportion equation
   189,008.50 : 283,414.31 = 89,141.88 : x
2. Step 2: Convert to fraction form
   189,008.50/283,414.31 = 89,141.88/x
3. Step 3: Cross multiply
   189,008.50x = 283,414.31 × 89,141.88
4. Step 4: Simplify right side
   189,008.50x = 25,264,083,238.07
5. Step 5: Solve for x
   x = 25,264,083,238.07/189,008.50
6. Step 6: Final answer
   x = 133,666.39