Finding the Fourth Proportional to 143,096.95, 197,433.75 and 89,436.48

Step by Step Solution

1. Step 1: Write the proportion equation
   143,096.95 : 197,433.75 = 89,436.48 : x
2. Step 2: Convert to fraction form
   143,096.95/197,433.75 = 89,436.48/x
3. Step 3: Cross multiply
   143,096.95x = 197,433.75 × 89,436.48
4. Step 4: Simplify right side
   143,096.95x = 17,657,779,633.20
5. Step 5: Solve for x
   x = 17,657,779,633.20/143,096.95
6. Step 6: Final answer
   x = 123,397.32