Finding the Fourth Proportional to 189,008.69, 283,414.59 and 89,142.06

Step by Step Solution

1. Step 1: Write the proportion equation
   189,008.69 : 283,414.59 = 89,142.06 : x
2. Step 2: Convert to fraction form
   189,008.69/283,414.59 = 89,142.06/x
3. Step 3: Cross multiply
   189,008.69x = 283,414.59 × 89,142.06
4. Step 4: Simplify right side
   189,008.69x = 25,264,160,386.66
5. Step 5: Solve for x
   x = 25,264,160,386.66/189,008.69
6. Step 6: Final answer
   x = 133,666.66