Finding the Fourth Proportional to 143,085.43, 197,417.88 and 89,424.95

Step by Step Solution

1. Step 1: Write the proportion equation
   143,085.43 : 197,417.88 = 89,424.95 : x
2. Step 2: Convert to fraction form
   143,085.43/197,417.88 = 89,424.95/x
3. Step 3: Cross multiply
   143,085.43x = 197,417.88 × 89,424.95
4. Step 4: Simplify right side
   143,085.43x = 17,654,084,541.65
5. Step 5: Solve for x
   x = 17,654,084,541.65/143,085.43
6. Step 6: Final answer
   x = 123,381.43