Finding the Fourth Proportional to 160,426.89, 240,876.89 and 89,488.12

Step by Step Solution

1. Step 1: Write the proportion equation
   160,426.89 : 240,876.89 = 89,488.12 : x
2. Step 2: Convert to fraction form
   160,426.89/240,876.89 = 89,488.12/x
3. Step 3: Cross multiply
   160,426.89x = 240,876.89 × 89,488.12
4. Step 4: Simplify right side
   160,426.89x = 21,555,619,590.11
5. Step 5: Solve for x
   x = 21,555,619,590.11/160,426.89
6. Step 6: Final answer
   x = 134,364.13