Finding the Fourth Proportional to 442,105.29, 662,603.39 and 189,088.83

Step by Step Solution

1. Step 1: Write the proportion equation
   442,105.29 : 662,603.39 = 189,088.83 : x
2. Step 2: Convert to fraction form
   442,105.29/662,603.39 = 189,088.83/x
3. Step 3: Cross multiply
   442,105.29x = 662,603.39 × 189,088.83
4. Step 4: Simplify right side
   442,105.29x = 125,290,898,823.69
5. Step 5: Solve for x
   x = 125,290,898,823.69/442,105.29
6. Step 6: Final answer
   x = 283,396.06